—Whodoyouthinkwillgetthefirstprize?—Mary,ofcourse.She

問題詳情：

—Who do you think will get the first prize?

—Mary, of course. She ________ for the competition for months.

A. is preparing                B. was preparing

C. had been preparing           D. has been preparing

【回答】

D

知識點：現在完成進行時及其被動式

題型：選擇題