问题
Those boys didn’t start the work _____ their teacher come back. [ ]
A: until
B: while
C: as soon as
D: if
B: while
C: as soon as
D: if
正确答案是：
同类题型
Mr Smith caught hold ___ Bob and said, “This is a good lesson___ you.” [ ]
Have you read this book？—Yes．I _______ it two weeks ago．
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Our English teacher is very strict ______ us and he is strict ______ his teaching. [ ]
Mr. Li, can you repeat it again? I’m ____ slow to write down all the main points.