--Must we hand in our homework now?---No, you ___. You ___ hand them in before Friday.

A. mustn’t , can   B. needn’t, can   C. can't , can    D. mustn’t, must

---Please help me, will you?  ---_____.

A.You’re welcome    B. Of course, I will    C. Not at all     D. It’s my pleasure

The boy is good ___ learning English and he does well ___ it.

A. at, at    B. at, in    C. in ;at     D. in; in