In our school libray,there____a number of books on science and the number of them_____growing larger and larger. A.is;are B.are;is C.have;is
— His passport shows that he________Canada. — Yes. He went there on business in spring and autumn last year.
There is no doubt that students________in their study if theymore praise from their teachers.
One of the important lessons children learn from their parents is________
It is safe to eat chicken that________fully, but most people still dare not do that because of the H7N9bird flu .
More historical buildings in the old town will fall down________we try our best to protect them.