________ forever are the days ________ I was young.

[　　]

－I believe ________ you've done your best and ________ things will improve.

－Thank you.

[　　]

Now that you have a job, you should devote yourself to ________ you do at work.

[　　]

I knew him when we were at school together, but that's many years ago. If I were to meet him today I shouldn't know him from Adam. The underlined sentence means ________.

[　　]

A．I can't recognize him without Adam's help

B．I should recognize him at first sight

C．I should be unable to recognize him

D．I should have recognized him

As in other countries, the cities of China were usually ________ where they ________.

[　　]

It is said that he ________ sent to Austria to improve his English.

[　　]

－What happened to the priceless works of art?

－________.

[　　]

A．They were destroyed in the earthquake

B．The earthquake was destroying them

C．They destroyed in the earthquake

D．The earthquake destroyed them

A terrible accident has ________ on the road outside our office.

[　　]

The air company going from bad to worse, the workers ________ hardly enough to make a living.

[　　]

They ________ at our not going to pay them a visit.

[　　]