1 For a while everyone was screaming,tugging,beating and kicking and then Mother came in from the kitchen and said firmly,"___!it's time for a rest."A Do B Have done C Doing D Done2 This tour along the east coast of America allows you,as it __,to liv

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1 For a while everyone was screaming,tugging,beating and kicking and then Mother came in from the kitchen and said firmly,"___!it's time for a rest."A Do B Have done C Doing D Done2 This tour along the east coast of America allows you,as it __,to liv
1 For a while everyone was screaming,tugging,beating and kicking and then Mother came in from the kitchen and said firmly,"___!it's time for a rest."
A Do B Have done C Doing D Done
2 This tour along the east coast of America allows you,as it __,to live through the most dramatic events of the American Independent War.
A be B was C were D is
3 Right in the middle of the mayor's speech that brought forth various reasons for the recent sharp rise in prices,an angry voice was heard in the crowd,"the government __hanged!"
A is B was C be D were
这三个题的答案分别是 B C C
我想知道为什么,每个题涉及的是什么 语法,这几个题我是在虚拟语气里面做到的.

1 For a while everyone was screaming,tugging,beating and kicking and then Mother came in from the kitchen and said firmly,"___!it's time for a rest."A Do B Have done C Doing D Done2 This tour along the east coast of America allows you,as it __,to liv
1.Have done!习惯表达 意思是"够了,停止,算了吧"
2.as it were 固定结构,常做插入语,意思类似于 as it seems 意思是 似乎,仿佛 好像 可谓 可以说是
3.我觉得这据话,象是祈使句,祈使句中的动词都是要用动词原形的.比如 Be quiet,please.(you) Be careful!