I looked at the young man, wondering ________ .

[　　]

A．when had I seen him before

B．that where I had seen him before

C．if I saw him before

D．whether I had seen him before

Hurry up! There isn't enough time ________ the train.

[　　]

I thought the question was too difficult,________ ?

[　　]

Be careful ________ April Fools' Day !________ you will be played a trick on.

[　　]

In Western countries on Christmas Day, children are ________ the old people.

[　　]

A．the happiest of

B．much more happy than

C．as happy as

D．much happier than

The sitting room isn't________ , so it's not a good place for me to study in .

[　　]

A．quiet enough

B．enough quiet

C．quietly enough

D．enough quietly

When I could not work the exercies out, he stopped ________ me.

[　　]

He ________ worked in a small village, maybe that was over ten years ________.

[　　]

A．ago, ago

B．before, ago

C．once, ago

D．before, before

The girl ________ a bag on her back ________ big eyes.

[　　]

I ________ he ________ to see you tomorrow.

[　　]

A．didn't think, would come

B．thought, would not come

C．don' t think, will come

D．think, will not come