A.exchange
B.blame
C.danger
D.anger

I couldn't _________ them when we climbed the mountain.
A.keep up with
B.keep on with
C.keep away from
D.keep out of

The mother is very ________about the health of her little son.
A.confused
B.careful
C.nervous
D.concerned

Tom: " Sorry, I forgot to phone you last night." -Mary: "________"
A.I have nothing to tell you.
B.Never mind!
C.Oh. Poor me!
D.You was absent - minded.

Some vegetables are grown without soil and under ______ light.
A.unreal
B.fake
C.FALSE
D.artificial

It is imperative that your facebook password ________ confidential.
A.needed keeping
B.needs to be kept
C.need keeping
D.need to keep

The man who lives opposite us sometimes comes __________ for a cup of coffee.
A.over
B.to
C.on
D.off

She had changed so much that________ anyone recognized her.
A.not
B.almost
C.hardly
D.nearly

Many plant and animal species are now on the__________________ of extinction.
A.danger
B.margin
C.border
D.verge

The two men looked so alike that it was impossible to____________ between them.
A.discriminate
B.discern
C.distinguish
D.differ