英语问题!十万火急!请给我仔细讲解一下下面这道题：（1）-How many students are there in

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英语问题!十万火急!
请给我仔细讲解一下下面这道题：
（1）-How many students are there in the classroom?
- ( ). They are all on the playground.
A.No one B. None C.Nobody D. Everyone
（为什么不选“A”）
（2）People ( ) the southwest of China were in great need of water a couple of months ago.
A. in B. at C. to D. on
（为什么用in,而不用on）
（3）It's very kind ( ) you.Thank you for your help.
A. of B.for C. to D. on

(1)No one不是量词
（2）介词的使用是固定的,只能记住,没有原因
（3）It's adj of sb是固定句型（adj 是形容词的意思,sb是某人的意思）

2道英语单选1 how many students are there in your shoool?________t how many students are there in your school?____the students 请给我讲一下There are over two t_____ students in our school.（ 1How many students are there in his class? (翻译) 2.（） would y 请帮讲解下句子成分 how many states are there in the universe? 根据实际情况回答问题1.How many students are there in your class?2.What 4.---How many students are there in your class,Rita? 如何回答how many students are there in your class? How many students and teachers are there in the school how many students are there in your classroom how many students are there in the class today? How many students are there in the classroom?答语