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

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

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

 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

 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

 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

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

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

 His son was put in ______ prison last year. He went to ______ prison to see him yesterday

  A. /; the        B. the; the          C. /; /              D. the; /

 My father often listen to_____ music in ___ bed at night

 A. the; the         B. /; /              C. the; /          D. /; the

 Susan, ________ university student from Europe, teaches me ________ art in her spare time.

A. an; /           B. a; the            C. an; the           D. a; /

 Be polite to _________ disabled and give them encouragement to live as rich and full ________ life as you do

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