问题

By the time I was nine ,I ______hundreds of English words.

A:had learned
B:have learned
C:has been learned
D:had been learned

正确答案是：

标签： been , had , time

同类题型

There are four ______ students in my school.

of the students in my school are girls.

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I don’t think we can find a new day to work out the problem. — But we’d better not .

Pardon? I didn’t hear you just now. –I asked.