问题补充:
— Has Sam finished his homework today?
— I have no idea. He it this morning.
A. did
B. was doing
C. has done
D. had done
答案:
A. did
(答案→)B. was doing
C. has done
D. had done
解析:考查动词的时态。根据this morning可知句子要用一般过去时态的某种形式,且表明今天早晨我看见他时他正在做作业,所以选B。
时间:2022-05-22 13:03:17
— Has Sam finished his homework today?
— I have no idea. He it this morning.
A. did
B. was doing
C. has done
D. had done
A. did
(答案→)B. was doing
C. has done
D. had done
解析:考查动词的时态。根据this morning可知句子要用一般过去时态的某种形式,且表明今天早晨我看见他时他正在做作业,所以选B。