问题

Has Peter handed in his paper yet?—I’m not sureHe _______ on it last week

A:was working
B:has worked
C:worked
D:had worked

正确答案是：

同类题型

He being a child of_____ intelligence, expecting too much of him will make him nervous.[ ]

Which sentence structure is “S+V+P”

When residents(居民) learned on Wednesday that only one of the 13 workers trapped underground _________, they burst into tears.

You should this medicine twice a day.

－What’s Tom doing now－He in the library.