It takes more than knowledge and intelligence to ______ a good researcher．

Man-made-satellites______ into space bymany countries

Though ____ money, his parents managed to send him to university.[ ]

I think English is __________ unimportant subject.— I don’t think so. It is __________ useful tool when we talk with foreigners.

Do you know the tower _____ in the heart of thecity— You mean the one _____ from the Ming Dynasty