35、　　, most of the spelling mistakes can be avoided.

　　 A、Checking your composition carefully

　　 B、Check your compostion carefully

　　 C、If　 you check your composition carefully

　　 D、Your composition is carefully checked

34、－Shall we go to the cinema this evening？

　　 －Sorry, I can't. I'm　 　　 my mum at the airport at　 7:00.

　　 A、carrying away　　 B、sending away C、putting off　 D、seeing off

33、The　 　doctors in the country were attending the medical meeting to find out the real 　　of SARS.

　　 A、experience, cause　　　　 B、experienced, reason　

　　 C、top, cause　　　 D、top, reason

32、－He asked Tom,“Have you finished your homework？”

　　 －He asked Tom 　　　.

　　 A、if had he finished his homework.

　　 B、whether he had finished his homework.

　　 C、if he had finished homework.

　　 D、if you had finished your homework.

31、“Not all of the dinosaurs were dangerous”. This sentence means　 　　 .

　　 A、none of the dinosaurs were dangerous.

　　 B、all of the dinosaurs were not dangerous.

　　 C、few of the dinosaurs were dangerous.

　　 D、no dinosaurs were dangerous