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要选择这个答案的原因最好把为什么选这个答案的原因讲一下,选项的区别,3.Will you stay for lunch?

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要选择这个答案的原因
最好把为什么选这个答案的原因讲一下,选项的区别,
3.Will you stay for lunch?
Sorry,______.My brother is coming to see me.
A.I mustn’t B.I can’t C.I needn’t D.I won’t
10.It was so cold that the travelers had the fire ______ all the night.
A.burning B.to burn C.burn D.burnt
13.I will give ______ students ______ minutes for them to finish their exercise
A.the other; other five B.the other; another five
C.other; five more D.other; more five
15.The family ______ at the lunch table when someone came to tell them what had happened at ______.
A.were sitting; Mr Brown B.were sitting; Mr Brown’s
C.was sitting; Mr Brown D.was sitting; Mr Brown’s
(family的单复数情况讲一下)
18.Has Jack finished his homework yet?
I’ve no idea,But he ______ it the whole afternoon.
A.would do B.was doing C.did D.had done
B can;t 拒绝,mustn't:禁止,绝不,语气不符合
A have the fire burning :让火一直燃烧着,doing表示一直.
B the other students :表示确定的指代,another five=five more
B 后面有个them,所以用复数,Mr Brown’s (house)某人的家里
family:整体单位一时为单数概念,如 The family has five members.
family:具体成员时,视为复数,如题目,正在吃饭的人
B 整个下午都在做作业.
希望能帮到您
再问: 您的回答除了十三题,其他都是对的,十三题选A,不知道可否讲解一下,谢谢
再答: another five minutes、other five minutes 两个结构都是正确的 但是意思有点区别, another five minutes:再一个五分钟,表示时间的计算是以5为单位 other five minutes:另外五分钟,再五分钟; 感觉没有上下文,这个选择题两个答案都可以,A和B都是可以的