17*The number of teachers in our college _____ greatly increased this term. A number of teachers in this school _____ from the countryside.
A．is; is
B．is; are
C．are; are
D．are; is
答案是B
18* Looking round the town, he felt as though he ____ away for ages.
A. has been
B. was
C. is
D. had been
答案是D，for ages 许多年
19*One-third of the area _______ covered with green trees. About seventy percent of thetrees _______ been planted.
A.are; have
B.is; has
C.is; have
D.are; has
答案是C，主谓一致
词 组
set out 出发，动身，等于set off ；（怀着目标）开始工作，展开任务
set out to study 开始学习
set aside 把……放到一旁；省出，留出（时间或钱）
set aside personal feelings 把个人感情放在一边
set aside some money every month 每个月攒下一点钱
set aside an evening to study 留出一晚上学习
get back to normal 恢复正常
get back to sleep 接着睡
get back to the point 回到正题上来
get back my money 拿回我的钱
get into 从事，致力于；进入；获准（入学），被录取
get into Peking University 考入北京大学
get along with sth 某事进展如何
How are you getting along with your English? 你英语学得怎么样？
set in （不好的事情，比如坏天气，伤口感染等）到来，开始，产生，恶化
set about 开始做，着手做
set back 使……推迟，使……延误；使……花费，使……破费
The heavy rain set the sports meeting back. 大雨使运动会推迟了。
put away 把……收起来，放好
put out 伸出；扑灭；出版
He put out his hand. 他伸出手。
The fire was put out. 大火被扑灭了。
keep up with sb 跟上某人
keep sb from doing sth 阻止某人做某事
keep sb/sth in mind 把某人/某事记在心中
l will keep your words in mind. 我会把你的话记在心中。
keep away from sb/sth 远离……；勿靠近
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