1.— Let's go swimming, shall we?

— __________.

A. It's my pleasure            B. It doesn't matter            C. Yes, let's go            D. I agree with you

2.—What _____ great fun it would be if we could celebrate his birthday!

—Forget it! The teacher in _____ charge of our dorm won't be happy to see that.

A. a; the                                     B. /; the                                     C. /; /                                     D. a; /