Don't try to get off the bus ____ it has stopped.

A. while             B. as                C. since             D. before

—What do you want those old boxes?

—To put things in when I move to the new flat．

A．by B．for C．of D．with

After a quick dinner, they set off ______ car and made ______ the nearest town.

A. by, to   B. in, to   C. by, for        D. in, for

____ he will come or not is still unknown.     

A. If                  B. Where            C. That            D. Whether

I thought he hated the TV .You are right,____ he still watches the program.

A. yet             B. besides       C. also              D. then

The train leaves at 6:00 p.m. So I have to be at the station ____5:40p.m.at the latest.

A. until              B. after                     C. by                             D. around   

 51. He looked quite healthy ____ he was ____ the age of seventy.

A. when; at         B. because; in             C. if; for                  D. though; at

I was wandering ____ the streets when I caught sight of a tailor's shop.

A. across                          B. through      C.by                               D.past

Nobody knows it ____ me.                

A. except for               B. except that    C. besides       D. but

Mark was a student at this university from 1999 to 2003, ____ ,  he studied very hard and was made Chairman of the Students' Union.

A. during which time   B. for which time     C. during whose time     D. by that time