We are supposed to put the sentence parts together to form complete sentences. After doing that, this is what we have:
1. As soon as the taxi arrives at our apartment, Sue and I will be leaving.
2. It was a cold, windy day when two young boys took their kites up the hill for a test flight.
3. If you submit the assignment on time, you will obtain better grades.
4. The teachers are there to help students with their learning, especially if they are having difficulties.
5. They roared with excitement as he raced down the goal line.
Sentence 3:
Independent clause - "You will obtain better grades."
Dependent clause - "If you submit the assignment on time."
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