（ ）16.-must i finish my bomework before 11 o’clock -NO，you ——.but you should finish it before lunchA：mustn't B：can’t C：don’t have to （ ）17.i think i can do it ——myselfA：on B：by C：with （ ）18.-hello，extension 4

（ ）16.-must i finish my bomework before 11 o’clock -NO，you ——.but you should finish it before lunchA：mustn't B：can’t C：don’t have to （ ）17.i think i can do it ——myselfA：on B：by C：with （ ）18.-hello，extension 4
（ ）16.-must i finish my bomework before 11 o’clock
-NO，you ——.but you should finish it before lunch
A：mustn't B：can’t C：don’t have to
（ ）17.i think i can do it ——myself
A：on B：by C：with
（ ）18.-hello，extension 405，please——
A：hello B：sure C：just a moment
（ ）19.during that time，SARS spread easily ——people
A：among B：between C：through
（ ）20.parents always keep their children away——in the river alone
A：to swim B：from swimming C：for swimming
（ ）21.My good friend，xu fei，is in Australia now.i have to talk —him—the phone.
A：on，on B：with，with C：with，on
（ ）22.please tell your father —me—.
A：to ring，up B：rings，up C：to ring
（ ）23.-could you help me ——my pet dog？
-OK，i can
A：check over B：care for C：fell like
（ ）24.——！it's time for class
A：hurry up B：come up C：give up

（ ）16.-must i finish my bomework before 11 o’clock -NO，you ——.but you should finish it before lunchA：mustn't B：can’t C：don’t have to （ ）17.i think i can do it ——myselfA：on B：by C：with （ ）18.-hello，extension 4
16.C 以must开头的一般疑问句的肯定答语用Yes...must.否定答语则用No...need/t.或No...don/t have to. 17.B by oneself“亲自” 18.C extension的意思为“伸展;伸长;扩大[U][(+of)]延长;延期;缓期[U][C] 延长部分;扩大部分;增设部分.电话分机 19.A “在人群中扩张”among和between均有“在.之中”之意,但between强调两者或两部分之中,among强调三者或三者以上之中.through强调在立体空间中“穿过 20.B keep sb away from doing sth "阻止某人做某事” 21.C talk with强调双方交谈,而talk to则侧重一方说,另一方听 .on the phone指“通过电话（交谈等）. 22.A tell sb (not)to do sth"告诉某人（不要）做某事” ring/call sb up "打电话给某人”23.B 24.A “（要）上课了” 根据题意,应选A选项hurry up"快点" .

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cbcabccba

16.C
17.B
18.C
19.A
20.B
21.C
22.A
23.A
24.A
希望对你有用~（ ）25.the second world war ——out in 1939 A：came B：went C：broke这个呢？C.break out 是爆发的意思。 Broke out是break out...

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16.C
17.B
18.C
19.A
20.B
21.C
22.A
23.A
24.A
希望对你有用~

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1选A

16C,17B,19A,20B,21C,22A,23B,24A

我可以帮你，你得把题目给我啊