He felt as if he alone _________ what had happened．

be responsible to

should be responsible to

be responsible for

were responsible for

They _________ a heated argument．

involved

involved in

were involved in

are being involved

_________ on careful plan and preparation, his experiment was a complete success．

Basing

Carried out

Based

On the base

I would _________ it if you would turn the music down．

matter

mind

thank

appreciate

I really appreciate _________ time to relax with you on this nice island．

to have had

having

to have

to having

Not having a good excuse for arriving home so late, the girl _________ as she was afraid of being scolded．

made it up

made up it

took one up

made one up

In Britain today, women _________ 44％ of the work-force and nearly half mothers are at work．

build up

take up

make up

set up

Mr Brown devoted his _________ life to the research work．

all

whole

all the

the whole

This is a very interesting book．I’ll buy it, _________．

how much may it cost

no matter how it may cost

however much it may cost

how may it cost

The young girl sitting next to me on the plane was very nervous．She _________ before．

hasn’t flown

didn’t fly

hadn’t flown

wasn’t flying