The chances of discovering life on Neptune are about a million _____.

        A. at one    B. for one    C. to one    D. against one

Polar bears live mostly on_____ sea ice, which they use as ____platform for hunting seals.

A.     a;a  B.a;the  C./;a  D.the;/

Whenever you are _____ , you can ask us for help.

       A.  in ruin            B.  in reward     C.  in trouble              D.  in turn

We are invited to a party _________in  our club next Friday. 

A. to be held        B. held         C. being held         D. holding

_________to reach them on the phone, we sent an email instead.

A. Fail            B. Failed             C. To fail          D. Having failed

____ twice, the postman refused to deliver our letters unless we changed our dog.  

A. Being bitten     B. Bitten  

C. Having bitten    D. To be bitten  

Before going abroad he devoted all he could _______ his oral English.

A. improve。mB. to improve

C. improvingD. to improving

I _____ a novel written by Ernest Heming –ways last night, and another night I’ll finish it.

A. read     B. have read        C. had read      D. was reading

My mind wasn’t on what he was saying, so I’m afraid I _____ half of it.

A. was missing        B. had missed         C. will miss        D. missed

— You haven’t said a word about my new coua, Brenda. Do you like it ?

— I’m sorry, I _____ anything about it sooner. I certainly think it’s pretty on you.

A. wasn’t saying        B. don’t say      C. won’t say      D. didn’t say