题目

题型：同步题难度：来源：

用所给词的正确形式。
1. When I ________(give) you a present, you must open it at once.
2. American people eat lots of ________ (hamburger) everyday.
3. Can he ________ (help) me ________ (do) the work?
4. It"s too difficult ________ (understand)what you are trying ________ (say).
5. He could see the smoke ________ (rise) from the chimney (烟囱) when he
    ________ (walk) past your house at this time yesterday.

答案

1. give 2. hamburgers 3. help, do
4. to understand, to say 5. rising, walked