You had better give ___ smoking

A. back   B. over   C. out    D. up

---Could you give me some ink? ---Sorry, I haven’t ___ left myself.

A.few   B. little    C.many     D. much

Don’t be discouraged.         things seriously and you will make great progress.

A. Take       B. To take        C. Taking       D. Taken

Under more favourable conditions, we _____ better. 

   A. need have done   B. should do  C. could have done   D. might be doing

Global warming ________ cause huge climatic changes and possibly a new ice age.

A. is possible to                 B. may possible                C. is likely to                      D. is maybe to

You ought to write a”T”     true in front of the statement．       Each mistake that you make you’ll lose one point．

A．with：In          B．for：For         C．by；With       D．on；By

They first reach an agreement on the basic principle, the details____later

A. to work it out               B. having been worked out 

C. to be worked out             D. being worked out 

The performance of the host, _____ to please the audience and draw their attention, was greeted with a cold silence, however.

　A. had intended    B. intended   C. being intended   D. to intend

The joke told by Tom made us _____, so the teacher couldn’t make himself _____.

A. to laugh; hearing                B. laughing; heard

C. laughing; hear                   D. laughed; heard

It’s too hot today. Why not ____ your coat?

A. taken off                              B. to take off         C. take off              D. taking off