问题

It’sreally difficult to ______ what he is trying to express

A:gave
B:havegiven
C:had given
D:was giving

正确答案是：

同类题型

Which of the following sentences is RIGHT

（2007年普通高等学校招生全国统一考试全国卷I，7） ___ felt funny watching myself on TV

The popular TV drama You Who Came From the Stars tells a love story____ a 400-year- old alien and a human actress.

It takes more than knowledge andintelligence to ______ a good researcher

We think that _______ more vegetables _______ good forus.