40.-Daivid, turn off the TV_____no one is watching it.

　　 -But it_____off already! The music is from the radio.

　　 A.so that, has been turned　　　　　　　　 B.when, has turned

　　 C.if, has been turned　　　　　　　　　　 D.because, has turned

39.-Dad, why should I stop _____computer games?

　 -For your health,my boy.I’m afraid you_______.

　 A.to play, must　　　 B.playing, have to　　 C.to play, can　　 D.playing,are

38.______for your letter and photos!

　 A.Thank　　　　　 B.Thanks　　　　　 C.Thanking　　　 　D.To thank

37.-What _____dessert would he like?

　　 -She’d like a small one.

　 A.kind　　　　　　 B.kinds of　　　　　 C.size　　　　　 D.kind of

36.He_____his homework. He was very busy.

　　 A. didn’t　　　　 B.doesn’t do　　 　　　C.didn’t do　　　 D.do

35.-Will you please take a message for Mike?

　　 -______.

　　 A.Yes, the message is important　　　 B.That’s very nice

　　 C.Thanks for telling me　　　　　　　 D.I’ll be glad to