A quarrel _________, which made him ______ his family.

A. was broken out; break away

B. broke out; break away from

C. was broken away; break down

D. broke down; break out

There are many tall old trees____ in and around our school.

A. stood       B. to stand   C. standing    D. being standing

 ____polite to others and you can get friendship in turn.

A. Be         B. To be     C. Being      D./

This also keeps the air，soil，water crops________ chemicals.

A.out of        B.out from   C.free of      D.rid of

 She was always _____ , even when things were at their worst.

A. attractive   B. optimistic  C. pessimistic   D. frightened

Not recognizing me at first, __________.

A. he closed the door        B. the door was closed

C. the door was close        D. I closed the door

The students all wear the same uniform,so it’s hard for me to  ________my son among them.

A.bring out  B.pick out    C.pick up        D.break out.

It was obvious that the Climate Change Conference in Copenhagen______the global environmental problems.

A. aimed on               B. focused on 

C. intended for           D. commented on

 __________ the term has come to an end, I’m going to rest for a few days and then take a trip.

A. Now that               B. Even if                   C. As though    D. So that

_____ his electronic dictionary made himself sad.   

A.Losing         B. Lost   C. Being lost    D.To be lost