When he was _______ university student, he wanted to become _________ NBA player.
A. a, a B. an, an C. a, an D. an, a
We are not sure when the rain ________. When the rain ________, we will go on working.
A. will stop, stops B. stops, will stop C. will stop, will stop D. stops, stops
--- How long have you read this book? --- _________ I finished my homework.
A. Until B. As soon as C. Since D. When
We don’t know how important something is _______ we lose it.
A. or B. until C. as soon as D. after
She felt more confident _______ she won the speaking competition.
A. until B. while C. before D. after
--- Mom, can I play computer games for a while?
--- __________ your homework __________.
A. Until, will be finished B. Until, is finished
C. Not until, will be finished D. Not until, is finished
