1--You look so excited

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1--You look so excited
--Yeah.Yesterday I met one of my old friends.
We_____ each other since we _____middle school.
A.haven't;left B.hadn't seen;had left C.hadn't seen;left D.didn't see;had left
2.news是不是可数的?
3.success ,successful ,succeed,successfully 的区别
4.怎么找先行词（举个例子）
5.How 和 What 的区别..总弄不懂怎么分（举个例子）
6.反义疑问句中什么时候答句用Yes,什么时候用No
(是不是问句和答句是同一个意思用Yes?)
例：【---He hasn't returned to Canada,has he?
---No,he is on a visit to shenzhen.】这句话中问句和答句是同一个意思..为什么不用Yes?
7.----Do you think the air in our city will become cleaner?
----Well,it____ get cleaner_____ the government takes action.
A.will;until B.won't;if C.won't;unless D.will;whether
各位请按问题顺序回答..要说原因.

1.C ,since 前后的句子时态应该相差一个,例如since前面的时态是现在时,那么后面的就应该是一般过去式.
2.不可数.
3.分别是名词,形容词,动词,副词
4一,先行词是用在定语从句中,二,先行词一般是放在引导词which,what等的前面.如果还无法判断,把句子读一遍,能翻译称“怎么样的sth,这个sth就是先行词.例如this is the book which I want to buy.你可以用这三种方法分别试一下.
5.how是形容词性的,what 是名词性的.how 后面最终接形容词,what 后面最终接名词.注意,是最终!例如what a beautiful girl!How big !
6.根据事实,不要受问句影响,去了就用yes,没去就用no.但翻译时要相反地翻就可以了.
7.选C.这是not.unless 表示除非.

1--You look so excited Mike,you look so excited.Yeah.There________a tennis game pla you look very excited are you so excited? 1.– Why do you look so excited --- I met my best friend ____ Sandy,why do you look so excited?--I'll go to London for the __ __ __,bai ling?you look so excited.横线上填什么单词 why are you so excited? 单项选择 ----Why are you so excited? Why are you so excited today What do you think____these people so excited? Look! You look so_______用excited还是exciting?