Of all           reasons for my decision to become a university professor, my father’s advice was           most important one.

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

 The computer system           suddenly while he was searching for information on the Internet.

A. broke down       B. broke out        C. broke up     D. broke in

 I hear           boys in your school like playing football in their spare time, though others prefer basketball.

A. quite a lot          B. quite a few      C. quite a bit      D. quite a little

 He was about halfway through his meal           a familiar voice came to his ears.

A. why              B. where            C. when         D. while

 I was told that there were about 50 foreign students           Chinese in the school, most           were from Germany.

A. study; of whom                           B. study; of them

C. studying; of them                        D. studying; of whom

 －These books are too heavy for me to carry.

－           .

        A. You may ask for help                     B. I’ ll give you a hand

        C. I’ ll do you a favor                        D. I’d come to help

 The father as well as his three children________ skating on the frozen river every Sunday afternoon in winter.

        A. is going     B. go               C. goes             D. are going

 People have always been curious           how living things on the earth exactly began.

        A. in               B. at               C. of                   D. about

 I think it is necessary for my 19-year-old son to have his own mobile phone, for I sometimes want to make sure if he           home for dinner.

        A. come         B. comes            C. has come         D. will come

 makes this shop different is that it offers more personal services.

A. What          B. Who          C. Whatever         D. Whoever