题目内容
---So hard_ in the past few months that he has made great progress in English.
---I can see that, only a few mistakes _____ in this exam.
---I can see that, only a few mistakes _____ in this exam.
| A.has he worked; did he make | B.he has worked; he made |
| C.he has worked; has he made | D.has he worked; he made |
D
略
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