Test your grammar skills with this 16-question quiz designed to help students master the use of conjunctions like and, but, so, and because in sentences.

Grammar Quiz: AND, BUT, SO, BECAUSE

The task is to complete the sentences using the appropriate conjunctions: AND, BUT, SO, or BECAUSE. Below are the solutions with explanations for each sentence.

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#### 1. I was late for class this morning … the bus was late.
- Correct Answer: b) because
- Explanation: The second part of the sentence explains the reason for being late. "Because" connects the cause (the bus was late) to the effect (being late for class).

#### 2. I usually go home at four o'clock, … then I watch TV for an hour.
- Correct Answer: a) and
- Explanation: The two actions ("going home" and "watching TV") are connected in a sequence without any contrast or explanation. "And" joins them as part of a routine.

#### 3. My classmate studies very hard, … she always gets good grades.
- Correct Answer: c) so
- Explanation: The first part of the sentence explains the cause (studying hard), and the second part shows the result (getting good grades). "So" connects the cause and effect.

#### 4. Thomas was really hungry this morning … he didn't eat breakfast.
- Correct Answer: c) because
- Explanation: The second part of the sentence explains why Thomas was hungry. "Because" connects the reason (not eating breakfast) to the result (being hungry).

#### 5. We went to the airport, … we forgot to bring our suitcases.
- Correct Answer: b) so
- Explanation: The first part of the sentence describes an action (going to the airport), and the second part shows the consequence (forgetting the suitcases). "So" connects the action to its result.

#### 6. Cathy decided to order spaghetti, … Gary decided to order a pizza.
- Correct Answer: a) and
- Explanation: The two decisions are separate but related actions. "And" joins them without implying contrast or causation.

#### 7. I was very sick yesterday, … I didn't go to work.
- Correct Answer: c) because
- Explanation: The first part of the sentence explains the reason (being sick), and the second part shows the result (not going to work). "Because" connects the cause and effect.

#### 8. I fell off my bicycle … I wasn't careful.
- Correct Answer: c) because
- Explanation: The second part of the sentence explains the reason for falling off the bicycle. "Because" connects the cause (not being careful) to the effect (falling off).

#### 9. My bedroom was very cold … I forgot to close the window.
- Correct Answer: b) so
- Explanation: The first part of the sentence describes a condition (cold bedroom), and the second part shows the reason (forgetting to close the window). "So" connects the condition to its cause.

#### 10. First we drove to the airport, … then we got on the plane.
- Correct Answer: a) and
- Explanation: The two actions ("driving to the airport" and "getting on the plane") are connected in a sequence. "And" joins them without implying contrast or causation.

#### 11. It's raining outside, … you should take your umbrella.
- Correct Answer: c) so
- Explanation: The first part of the sentence describes a condition (raining outside), and the second part gives advice based on that condition. "So" connects the condition to the recommendation.

#### 12. I don't feel very well, … I think I'll go to see a doctor.
- Correct Answer: c) because
- Explanation: The first part of the sentence explains the reason (not feeling well), and the second part shows the result (deciding to see a doctor). "Because" connects the cause and effect.

#### 13. Sarah called her friend, … nobody answered the phone.
- Correct Answer: b) so
- Explanation: The first part of the sentence describes an action (calling her friend), and the second part shows the result (nobody answering). "So" connects the action to its outcome.

#### 14. I saw my teacher this morning, … I asked him about the test.
- Correct Answer: a) and
- Explanation: The two actions ("seeing the teacher" and "asking about the test") are connected in a sequence. "And" joins them without implying contrast or causation.

#### 15. They felt very bored, … they turned on the TV and watched a movie.
- Correct Answer: c) so
- Explanation: The first part of the sentence describes a condition (feeling bored), and the second part shows the action taken as a result. "So" connects the condition to the action.

#### 16. I fell off my bicycle, … I didn't get hurt.
- Correct Answer: b) but
- Explanation: The two parts of the sentence show a contrast. Falling off the bicycle is one event, and not getting hurt is another. "But" connects the two contrasting ideas.

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Final Answers:

1. b) because
2. a) and
3. c) so
4. c) because
5. b) so
6. a) and
7. c) because
8. c) because
9. b) so
10. a) and
11. c) so
12. c) because
13. b) so
14. a) and
15. c) so
16. b) but

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Scoring:

- 15–16 = Excellent
- 13–14 = Good
- 11–12 = Okay

If all answers are correct, the score is 16/16 = Excellent.

Final Answer: \boxed{16}