All the people must stop pollution ____our city cleaner and more beautiful.

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

In my opinion， life in the twenty-first century is much easier than　　　　 .?

A.that used to be　　　 B.it is used to ?　　　 C.it was used to 　 D.it used to be

He fell in love with her at first _____.
   A. scene   B. sight    C. look    D. sign 

— Excuse me, may I ask you some questions?

—Sorry, I’m too busy and haven’t even a minute to _______.

A. spend     B. spare     C. share     D. stop

It is hard for him ___________________________(接受) the fact that he has failed. (live)

It worried her a bit ____ her hair was turning grey.
A. while    　　　 B. that   　　　  C. if   　　　　　　　　  D. for

They are just human creatures in a human environment, trying to __________ themselves to a social situation.（ ）

A. adopt　　　　 B. adapt　　　　 C. avoid　　 D. admit

—How long__________at this job? ?

—Since 1990.?

A.were you employed?

B.will you be employed?

C.had you been employed?

D.have you been employed

Was ______ that I saw last night at the concert?

A. it you　　　 B. not you　　　 C. you　　　　　 D. that yourself

Anyway, that evening, _______ I'll tell you more about later, I ended up staying at Rachel's place.

A. when　　 　　　　　　　 B. where

C. what　　　 　　　　　　　 D. which