We don’t know_______ it next. Let’s go and ask Mr. Li.

A. what to do            B. to do what       C. whether to do   D. to do whether

We don’t know ______ it next. Let’s go and ask Mr Li.

A what to do   B to do what    C whether to do    D to do whether

We don’t know ________ it next. Let’s go and ask Mr. Li.

    A. what to do           B. to do what           C. whether to do    D. to do whether

You'd better go and ask Mr Yang. He ________know how to search the Internet.

A. can

B. would

C. may

D. could