30. --- _____ I borrow your lighter for a minute? --- Sure, no problem. Actually, you ____ keep it if you want to. I've given up smoking.

A. Can, can　　　 B. Should, may　　　　　 C. Must, can　　 D. May, must

29. He sent me an e-mail , _______to get further information.

A. hoped 　 B hoping 　 C. to hope 　 D. hope

28. When her servant left to have a baby, Lady Susan had to turn ___ cook.

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