Ⅰ. 用所给词的适当形式填空
1. Either you or the president is (be) to hand out the prizes to these gifted winners at the meeting.
2. I, who am (be) your close friend, will try my best to help you out of trouble.
3. Many a scientist has(have) been trying to solve the problems of the nuclear leakage.
4. There was (be) a lot of rubbish on the floor so I asked Mary to sweep it up.
5. Three million tons of coal is (be) exploited every year in the city.
6. Stories of the Long March is (be) popular with the young people now.
7. Mathematics is (be) the language of science.
8. Both rice and wheat are (be) grown in our country.
9. Has (have) either of your parents come to see you recently?
10. What the children in the mountain village need are (be) good books.
