My father began to work ____ a bus driver when he was twenty years old.

A.for             B.to                                    C.at                              D.as

There are altogether eleven books on the shelf, ______five are mine.

      A.on which          B. in which           C.of which          D. from which

You will find friendly people ___ you go in China.

A. where              B. and                C. wherever          D. so

Please write me ____ you arrive in New York.

A. as well as                  B. so long as            C. as far as            D. as soon as

He decided to the matter himself．

A．look through B.look into C．look after D．look up

_______ one old lady, the bus was empty.

A. Except B. Except for  C. But      D. Besides

My sister is expecting me,____ I must be off now.       

A. however           B. or              C. so             D. otherwise

He is very old,____ he still works very hard.     

A. but               B.if            C.when             D.as

. The word "write" has the same pronunciation ____ the word "right".

A. of               B.as                             C.to                             D.from

My uncle lives ____ 105 Huanghe Street. His room is ____ the fifth floor.

A.at;on                        B.at;at                          C.on;in                        D.of;to