20.The average number of hours of sleep that an adult needs is A.approximately six hours B.around ten hours C.about eight hours D.not stated here Part I.Vocabulary and Structure (40 points) Section A Directions:Each of the following sentences is followed by four choices (20 points).Choose the one that best completes the sentence. 21.Grandma used to tell us something about her past story she had spare time. A.as soon as B.as though C.as long as D.so that 22. he ran back as soon as the enemy attacked. A.That he was coward B.He was coward that C.Coward that he was D.He was that coward 23.You are really clumsy!It hours ago. A.should be finished B.must be finished C.must have finished D.should have been finished 24.The pilot asked all the passengers on board to remain as the plane was making a landing. A.seated B.seating C.seat D.to be seating 25.The continuous rain the harvesting of the wheat crop by two weeks. A.set back B.set off C.set out D.set aside 26.Doctors warned against chewing gum as a for smoking. A.succession B.substitute C.subject D.substance 119020. The average number of hours of sleep that an adult needs is • A. approximately six hours C. about eight hours Part ill . Vocabulary and Structure (40 points) Section A B. around ten hours D. not stated here Dir ections : Each of the following sentences is followed by four choices (20 points). Choose the one that best com pletes the sentence. 21. Grandma used to tell us something about her past story tIme. she had spare A. as soon as C. as long as B. as though D. so that 22. , he ran back as soon as the enemy attacked. A. That he was coward C. Coward that he was 23. You are really clumsy! It A. should be finished C. must have finished 13. He was coward that D. He was that coward hours ago. B. must be finished D. should have been finished 24. The pilot asked all the passengers on board to remain making a landing. as the plane waf' A. seated C. seat 25. The continuous rain A. set back C. set out B. seating D. to be seating the harvesting of the wheat crop by two weeks. B. set off D. set aside 26. Doctors warned against chewing gum as a for smoking. 1190 A. succession C. subject 13. substitute D. substance