Shall we John to help us with the project?I don’t think it’s a good idea. He has t

问题补充：

--- Shall we John to help us with the project?

--- I don’t think it’s a good idea. He has too much work to do.

A. have

B. make

C. ask

D. let

答案：

A. have

B. make

(答案→)C. ask

D. let

解析：四个选项的用法分别是：have sb do，make sb do，ask sb to do；let sb do，都是“让某人做某事”。根据to help可知，应该用ask。所以本题选C。