35.Meeting my uncle after all these years was an unforgettable moment, I will always treasure.

　A. that　B. one

　C. it　 　D. what

34.The research is so designed that once ____ nothing can be done to change it.

　A. begins　　 B. having begun

　C. beginning　D. begun

33.It is said in Australia there is more land than the government knows ____ .

　A. it what to do with　 　B. what to do it with

　C. what to do with it　 　D. to do what with it

32.Having a trip abroad is certainly good for the old couple, but it remains ____ whether they will enjoy it.

　A. to see　B. to be seen

　C. seeing　D. seen

31.We thought of selling this old furniture, but we've decided to ____ it. It might be valuable.

　A. hold on to　B. keep up with

　C. turn to　 　D. look after

30.John shut everybody out of the kitchen ____ he could prepare his grand surprise for the party.

　A. which　 　B. when

　C. so that　D. as if