Only when the meeting began ________ that he had left his papers at his office．

would he realize

he did realize

did he realize

he would realize

Whenever we are in ________, we must never lose ________, but try to think of the way out．

the trouble; our heart

troubles; hearts

trouble; heart

trouble; our heart

I think he is so determined that he won’t give in－you may try your luck and see if you can persuade that old ________ fellow．

stubborn

uneducated

friendly

responsible

When he was out of ________ work, he was involved in crimes of violence and was put in ________ prison at last．

the; the

/;/

a;/

/; the

Since Helen has never traveled alone, she is ________ about the journey on her own．

sensitive

cheerful

reliable

anxious

Don't respond to any e-mails ________ personal information, no matter how official they look．

searching

requesting

asking

questioning

The task ________ more difficult than we’d thought．

proved to be

was proved to be

proved being

proved was

Though tired out after the performance, everyone ________ with pride．

kept

swelled

acquired

involved

Although the students complained sometimes, they found their efforts in the preparation for the play ________．

laid off

switched off

paid off

gave off

It is really a challenging job to deal with people ________ various ages and backgrounds．

in

at

with

of