_____ , I suppose I’m frightened of failing.

A.do I

B.don’t I

C.won’t they

D.will they

I don’t know where the key is, but I suppose I ____________it at home.

A. could have left

B. should have left

C. must leave

A.the

B.some

C.any

D.all

I suppose she is not serious,___ ？

A.do I

B.don't I

C.isn't she

D.is she

He is the man ____ I suppose was capable of doing such a thing.

A. who

B. to whom

C. of them

D. whom

A.I like to

B.I feel so

C.I suppose So

D.I prefer to

A.I should imagine so.

B.No problem.

C.That' s a good idea.

I suppose there’ll be a lot of arguments.()

A. I should imagine so.

B. No problem.

C. That's a good idea.