问题

Tina, I have cleaned most of the windows.—That’s very kind you. It’s difficult me to do it all by myself.

A:of； for
B:for； of
C:for； for
D:of； of;

正确答案是：

同类题型

We still couldn’t decide _________ with ourdifficulties in learning English.

He disliked to wait, and he expected the manager him at once.

suggested the number of cars should be limitedto stop air pollution. —_______, the idea is not very practical.

Three years has passed ever since _____.

In our school library there _____ a number of books on science, and in these years the number of them _______ growing larger and larger.