20. -Mum! Mary's broken the tea pot!

　 - ________. Accidents will happen.

　 A．No way　　 　　　　 　B．Don't mention it 　 C．No trouble at all　 D．Doesn't matter

19. There is no ___________ in trying to talk him into joining us. He enjoys being alone.

A．doubt　　　　　　　　 B．wonder　　　　　　　　 C．hope　　　　　　　　　　　 D．point

18. Is it the years 　　　　　　you worked in Africa as a doctor 　　　　　have a great effect on your literary works?

A．that; where　　 B．that; that　　　 　 C．when; where　　　 D．when; that

17.He played a trick ___　 _ Jessy and he had to apologize _　 _ treating her _ _ _ a nice dinner.　

A．on,　for,　to　　　 　 B．in,　by,　to　　　　 C．on,　by,　to　　　　 D．on,　by,　with