Alike other forms of energy, natural gas may be used to heat homes, cook food and even run machines.
A.Alike
B.may be used
C.homes
D.even run

I asked him whether he had done it all himself or someone had helped him.
A.whether
B.had done
C.all himself
D.or someone had

I supposed, as ___ we all, that the meeting would be cancelled.
A.did
B.equally
C.would
D.just

He had spent ____ time writing an essay on his childhood.
A.a few
B.a large number of
C.a great deal of
D.many

Despite all the interruptions, he ____ with his work.
A.pressed on
B.held on
C.stuck at
D.hung out

My father is getting old and forgetful. _______, he is experienced and helpful.
A.Be that as it may
B.Regardless
C.In as much as it is
D.Consequently

_________(42)
A.responsibility
B.share
C.need
D.refusal

______(44)
A.single
B.lonely
C.alone
D.dependent

Which animals do people think may be the cleverest?

A.Chimpanzees
B.Big apes
C.Mammals
D.Dolphins

What is TRUE about dolphins?
A.They can speak to one another.
B.Man can now talk to them.
C.They can teach man their language.
D.They understand simple languages.