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13、About 　　　of the land surface of Africa 　　　covered with desert.

A、two-fifth;is　　　 B、two-fifths;is　　 C、two-five;is　　 D、two-fifths;are

12、She had a tense expression on her face,　　　 she were expecting trouble.

A、even though　　 B、as though　　　 C、even as　　　 D、now that

11、The moon is 　　　the earth.

A、as big as forty-nine times　 B、forty-nine times bigger than　　

C、as big as one-third　　 D、one-third the size of

10、Our holiday comes in 　　　time.

A、two-weeks　　　 B、two weeks’　　　 C、two-week’s　　　　　 D、two week’s

9、It took us quite a long time to get here.It was 　　　journey.

A、three-hour　　　 B、a three hour　　　 C、a three-hour　　　　　 D、three hours

8、As a result of destroying the forests,a large 　　　of desert 　　　covered the land.

A、number;has　　　　　 B、quantity;has　　　　 C、number;have　　　　 D、quantity;have

7、She was really too buy at the time,　　 she’d have came and helped with the cooking.

A、or　　　 B、but　　　 C、though　　　　 D、however

6、　　 of the land in that district 　　　　covered with trees and grass.

A、Two fifth;is　　　　 B、Two fifth;are　　　　 C、Two fifths;is　　　　 D、Two fifths;are

5、　　　 people in the would are sending information by email every day.

A、Several million　　　 B、Many millions　　　 C、Several millions　　 　D、Many million

4、The enlarged school campus is　　　 the old one.

A、as three times big as　　　　 B、three times as big as　　

C、bigger three times than　　 D、as big as three times