It was in 1969 ______ two Americans went to the moon by spaceship.

A. when             B. that                C. at that time       D. just then

 we first heard of the man referred to as a computer specialist in software. w.w.w.k.s.5

A. It was Hilary that                                            B. That it was from Hilary

C. It was from Hilary whom                 D. It was from Hilary that

 He is a good student，and works very hard；.

A. so it is with her    B. so was she

C. so she is        D. neither does she

 Was it when you were talking with a friend under the tree ______ your bike was gone? www.7caiedu.cn

A. that             B. where               C. which              D. while

 Is it the burning of more fossil fuels ______ is resulting in this increase in carbon dioxide ?

A. as               B. which            C. what           D. that

 Only after I had known him for some time to appreciate his real worth.

A. do I begin                          B. did I begin

C. I began                             D. had I begun

 So quickly ____ popular that some people who think his style is vulgar（庸俗的）are worried.

A. has Xiao Shengyang become            B. Xiao Shenyang has become

C. had Xiao Shengyang become            D. Xiao Shenyang became

 There ____ .

A. come they          B. they come

C. they are come      D. they will come 

 --What do you think makes the painter so well received? 

 --______, I think.

A. Because of his unique style    B. As a result of his unique style 

C. His unique style               D. Because he invented his unique style

 The witness suggested that the cheat _________ in prison.

A. referred to be put             B. refer to be put

C. referred to put                D. was referred to put