有几道英语选择题，请高手进来给出正确答案，谢谢！

Question

9. The story is the 18th century in Canada. （ ）
A. set off B. set in C. set about D. set on
10. Your mother is ill these day. You’d better a doctor.（ ）
A. call on B. call for C. call at D. call in
11. All but one here just now. （ D ）
A. would be B. was C. has been D. were
12. You to the meeting yesterday. What was the reason for your absence? （ ）
A. had come B. should have come C. came D. would have come
13. Tom ran to his school all the way, so when he got to the school gate, he was quite out of . （ ）
A. reach B. sight C. work D. breath
14. Jack to come to your party because he was too busy. （ ）
A. agreed B. stopped C. gave up D. failed
15、On the Public Switched Telecommunications Network,each subscriber connects via ( ) to an end office.（ ）
A、trunk B、link C、local loop D、line
16、A computer virus is a special ( ) which has the abilities to reproduce itself.（ ）
A、program B、circuit C、route D、terminal
请把正确答案告诉我吧，我急用啊，谢谢！！！

Answer 1

9) C set about 着手,开始(做)
set off 出发,动身,使爆炸

10) A call at v.拜访 后面接地名 call on v.请某人做某事
call for v.呼吁 提唱 call in作动词收入,招集之类

11) Dwere all 是复数 but 不影响格式

12) B should have done sth.本该做某事(却未做)
would have done也是对将来的事的虚拟

13) D out of breath 喘不上气 "快憋死了

14) D

15) A 端口汇聚

16）A