This worksheet helps students practice constructing complex sentences by selecting the correct subordinating conjunction for each scenario.

Task Overview:

The task requires completing complex sentences by inserting the appropriate subordinating conjunctions from the given options. The goal is to ensure that each sentence is grammatically correct and makes logical sense.

Given Subordinating Conjunctions:

- where
- if
- because
- while
- unless
- whereas
- till
- after

Solution:

#### 1. Terry told us about the incident where we had reached the place.
- Explanation: The word "where" is used here because it refers to a location. The sentence implies that Terry told us about an incident at the specific place we had reached.

#### 2. Ross took care of our garden while we were away.
- Explanation: The word "while" is used to indicate that Ross took care of the garden during the time when we were away.

#### 3. I thought Kia was a rude person, whereas in fact she is very kind.
- Explanation: The word "whereas" is used to show contrast between the initial belief (that Kia was rude) and the reality (that she is kind).

#### 4. If there is a will, there is a way.
- Explanation: The word "if" is used to introduce a condition. This is a common idiom meaning that if one has determination, they can find a solution.

#### 5. If you wish to join the club, please fill this form.
- Explanation: The word "if" is used to introduce a condition. It means that filling the form is contingent upon the desire to join the club.

#### 6. Unless you are very fit, you should not embark on mountaineering.
- Explanation: The word "unless" is used to indicate a condition that negates the main clause. It means that mountaineering is not recommended unless one is very fit.

#### 7. We waited at the airport till the flight took off.
- Explanation: The word "till" is used to indicate a duration or until a specific event occurs. Here, it means we waited until the flight took off.

#### 8. Jake didn’t play today because he had a toe injury.
- Explanation: The word "because" is used to explain the reason for Jake not playing. It connects the main clause ("Jake didn’t play today") with the reason ("he had a toe injury").

Final Answers:

1. where
2. while
3. whereas
4. if
5. if
6. unless
7. till
8. because

Boxed Final Answer:

\[
\boxed{
\text{1. where, 2. while, 3. whereas, 4. if, 5. if, 6. unless, 7. till, 8. because}
}
\]