31.Harold is a good student, ____ his best subject.

　　A)as English

　　B)English as

　　C)being English

　　D)English being

　　32.They ____ through the woods talking about the current affairs.

　　A)wandered

　　B)strayed

　　C)rambled

　　D)wondered

　　33.Tom felt awfully sorry ____ her about his absence in the party.

　　A)about

　　B)for

　　C)with

　　D)on

　　34.We chose this flat for it is very ____ for my office.

　　A)suitable

　　B)comfortable

　　C)near

　　D)convenient

　　35.Chinese is the ____ language of most Chinese.

　　A)mother

　　B)native

　　C)natural

　　D)home

　　36.He has been ____ such a bad temper all day.

　　A)in

　　B)on

　　C)by

　　D)at

　　37.While at home, she preferred ____

　　A)doing something to doing nothing

　　B)to do something rather do nothing

　　C)doing something rather do nothing

　　D)to do something to doing nothing

　　38.____she finds out that you've lost her dog?

　　A)What though

　　B)What if

　　C)What about

　　D)What ever

　　39.All the machines in the lab are ____ Miss White.

　　A)in charge of

　　B)in the charge of

　　C)under the charge of

　　D)under charge of

　　40.We agreed to you plan____, but we think it needs modification in some area.

　　A)in principal

　　B)on principal

　　C)in principle

　　D)on principle