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He must be helping the old man to water the flowers,______ ?      

A. is he    B. isn’t he     C. must he     D. mustn’t he

-------Do you have enough to ________all your daily expenses?

--------Oh yes, enough and to spare. 

A. cover         B. spend        C. fill        D. offer

We can never expect____ bluer sky unless we create_____less polluted world.

A. a; a                                   B. a; the

C. the; a                                 D. the; the

—May I open the window to let in some fresh air?

—___________

A. Come on     B. Take care    C. Go ahead!    D. Hold on!

.Everybody must have ___ own choice.

          A.her      B.one’s    C.his       D.our

___ of her two brothers has gone to college.

         A.All          B. Either        C.None       D.Neither

.--- What are you going to do next?

--- To write a science story about outer space ___ by Science and Technology Press.

A. published     B. being published

C. to be published    D. publishing

On hearing the news, she rushed out without hesitation,        her handbag         on the sofa and         in the distance.

       A．left; lied; disappeared                           B．leaving; lying; disappeared

       C．leaving; laying; disappeared                  D．left; lying; disappearing

－ Mom，what did your doctor say？

－He advised me to live ____ the air is fresher.

A in where        B in which     C the place where    D where

You've missed your ____， and you will have to wait for the next round.

A. chance              B. turn           C. time           D. part