We must do everything we can ________ our earth cleaner and safer.

A. made           B. to making          C. make          D. to make

Mr. Smith, together with his two sons, _____ Shanghai for about five months.

     A. has left       B. has been away from          C. have left     D. have been away from

No one can be sure _________in a million years.

A. how man will look like  B. how will man look like        

C. what man will look like   D. what will man look like

----Who’s that woman with Ann?

----I’m not sure. It _____be her mother.

　 　A. may 　B can　 C. will　 D. must

-----She dropped her favourite glass______ she stood up.

-----It’s a pity.

A. while　 　　　　 B. as　　 　　　　C. after　　 　　　　 D. until

 Mary devoted much of her time _______ the disabled people.

A. in helping     B. to helping      C. help           D. to help

-??--- When shall we go and play basketball?　

---- Not until the work ________ tomorrow.

　 A. will finish　　 　　　 B. finishes　　　　 　 C. will be finished　 D. is finished

--- What do you think of the book ?

--- Oh , excellent . It’s worth __________ a second time .

A．to read　　 B．to be read　　 C．being read　　　 D．reading

 On such a hot day, I would rather ______ at home than _______ out under the sun .

A. to stay, to go   B. to stay, go       C. stay, to go       D. stay, go

--- Did you watch the basketball match last weekend?

--- Yes, I did. It was covered _________, and I think it was wonderful.

A. lively　　　 B.alive　　　 　 C.living　 　　 D. live