1 . Social customs ________greatly from one country to _________.

A．vary;country	B．vary ;another
C．varies;another	D．vary; the other

2 . He was ________ the edge of success when the unexpected accident happened.

A．at

B．in

C．from

D．on

3 . The child ________ escaped being killed by the car .How lucky he was.

A．completely

B．greatly

C．narrowly

D．hardly

4 . After a heated discussion , an agreement ________ and the meeting ________ .

A．reached , came to an end	B．was reached , put an end to
C．arrived at , bring to an end	D．was arrived at , came to an end

5 . It ________ to me that we still have many things to do, so I went back to my office at once .

A．happened

B．occurred

C．struck

D．broke out

6 . Most people believe that _________knowledge is power and that having _______ good command of a foreign language is of great importance .

A．/ , a	B．the , a
C．/ ,   /	D．/,   the