How many pages have you_____ so far? Can you return the book ____ me tomorrow?

The church clock began to _______  twelve.

Has the doctor _______ called for?

Though the aerospace industry has made greater progress in China, the scientists will not _________ themselves ___________ this status.

Troubled by a terrible headache, Catherine wondered how she could _______ herself of the bad situation.

Canada is a country ________ many different nationalities as well as one with foreign immigrants __________ the majority of its population.

During our stay in London, the guide book ___ a great help. We all had a wonderful time.
A. behaved             B conducted          C. served         D. proved

We are going to visit an old temple _____ the 12^th century.

If you _______nature and do things at the wrong time of year, you will have to do more work and the results will not be so good.

How much do you ________ for repairing my CD player?