Suffix - Word Endings worksheet for language learning, focusing on adding -ed, -ing, and -er to words.

Problem Overview:

The task involves completing sentences by adding the correct suffixes to the given words. The suffixes provided are: -ed, -ing, -er, -est. These suffixes change the meaning of the words, often indicating past tense, present continuous action, or comparison.

Solution and Explanation:

#### 1. I am ______ on the phone with my grandparents.
- Word: talking
- Suffix: -ing (to indicate an ongoing action)
- Completed Sentence: I am talking on the phone with my grandparents.

#### 2. My brother and I ______ on the trampoline yesterday.
- Word: jumping
- Suffix: -ed (to indicate a completed action in the past)
- Completed Sentence: My brother and I jumped on the trampoline yesterday.

#### 3. My friends and I ______ to school last week.
- Word: walking
- Suffix: -ed (to indicate a completed action in the past)
- Completed Sentence: My friends and I walked to school last week.

#### 4. The mouse is ______ around the house for the cat.
- Word: looking
- Suffix: -ing (to indicate an ongoing action)
- Completed Sentence: The mouse is looking around the house for the cat.

#### 5. Jack ______ on the phone last night.
- Word: talking
- Suffix: -ed (to indicate a completed action in the past)
- Completed Sentence: Jack talked on the phone last night.

#### 6. I ______ my dad what I found last week.
- Word: showed
- Suffix: -ed (to indicate a completed action in the past)
- Completed Sentence: I showed my dad what I found last week.

#### 7. Megan is ______ all over the mall and shopping.
- Word: running
- Suffix: -ing (to indicate an ongoing action)
- Completed Sentence: Megan is running all over the mall and shopping.

#### 8. My grandpa is ______ up and down right now.
- Word: walking
- Suffix: -ing (to indicate an ongoing action)
- Completed Sentence: My grandpa is walking up and down right now.

#### 9. It has been two weeks since I ______ in the attic.
- Word: looked
- Suffix: -ed (to indicate a completed action in the past)
- Completed Sentence: It has been two weeks since I looked in the attic.

#### 10. Tom is ______ me where to put my books.
- Word: showing
- Suffix: -ing (to indicate an ongoing action)
- Completed Sentence: Tom is showing me where to put my books.

Final Answer:

1. talking
2. jumped
3. walked
4. looking
5. talked
6. showed
7. running
8. walking
9. looked
10. showing

Boxed Final Answer:
$$
\boxed{\text{talking, jumped, walked, looking, talked, showed, running, walking, looked, showing}}
$$