题目内容
Some of you may have finished unit one._____; you can go on to unit two.
| A.If you may | B.If you do | C.If not | D.If so |
D
考查省略。If so ="If" you have done so。句意:你们中的一些人可能已经完成第一单元,如果这样的话,你可以继续第二单元。
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