日语
韩语
法语
德语
西班牙语
意大利语
阿拉伯语
葡萄牙语
越南语
俄语
芬兰语
泰语
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
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
