Directions: Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the one answer that best completes the sentence.
21. I watched him _____ he disappeared from sight in the distance.
A. since B. after C. until D. as soon as
22. ______ you are so sure of it, he’ll believe you.
A. ThoughB. WhenC. SinceD. While
23. I’ll tell you ____ the teacher told me yesterday.
21. I watched him _____ he disappeared from sight in the distance.
A. since B. after C. until D. as soon as
22. ______ you are so sure of it, he’ll believe you.
A. ThoughB. WhenC. SinceD. While
23. I’ll tell you ____ the teacher told me yesterday.

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