Why and how he came here yet．( )A．is not knownB．are not knownC．has not knownD．have not been known 题目和参考答案——青夏教育精英家教网——

题目内容

11．Why and how he came here ______ yet．（　　）

	A．	is not known		B．	are not known
	C．	has not known		D．	have not been known

分析他为什么和怎么来到这儿还不知道．

解答答案：A 考查主谓一致．Why and how he came here是主语从句，作主语时，谓语动词用单数，排除B、D项；只能从A、C项中选择，而know是及物动词，要用被动语态，排除C项，只有A项正确．

点评考查主谓一致，了解各种主谓一致的表达形式，准确地翻译句子，然后根据题意选择最符合题意的答案．

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3．现在许多学校都鼓励学生参加社会实践活动，假如你是李华，请你根据下表的提示，用英语给你的校长写一封信，谈谈你的看法．

好处	可能造成的影响	你的看法
1．丰富知识，开阔视野	1．占用学习时间，影响成绩	…
2．学以致用	2．…

注意：1．短文须包括以上所有内容
2．新的开头和结尾已给出，不计入总词数
3．词数：100左右
Dear Sir，
I'm writing to tell something about students'taking part in social practice activities．

4．-Are you ready to leave？
-Almost，I'll be ready to go just as soon as I putting the clean dishes away．（　　）