We consider_____the instrument be adjusted each time it is use

I gave John a present but he gave me nothing______.

He had his book () at his own expense.

When and where to hold the meeting （ ） not decided yet.

_____ finished his work, he had to stay at home on the weekend.

Ten minutes _____ an hour when one is expecting a phone call.

He studies so hard to avoid （ ） at the bottom of the class.

If you get into difficulties, don’t hesitate to （ ） help.

Mary didn’t say （ ） she would return, but I believe she’ll be back for dinner.

English （ ） in a new way at my college in the past few years.

Do you mean this is the_____decision you have made after thinking for hours?

The engineer （ ） my father works is about 50 years old.