Laura _____(use) to smoke too much,but now she _____(give) i

I didn't see Laura at the party last night.Do you know________?
A.why didn't she come B.what happened
C.when would she arrive D.where she has been
选B.
此题考察在Do you know后面选一个【宾语从句】.宾语从句需要【陈述语序】,故排除选项A和C.选项D.where she has been的意思是：“(指现在)她去过哪里”,跟前句的过去时态不吻合.
如果我帮到了你,

珍妮：哦,嗨,劳拉.你在做什么?

选A,意思是“昨天晚上在聚会上我没有见到Laura ,你知道是怎么回事么（你知道发生了什么事么）?”.另外,从时态的角度考虑,可以看出前一句是一般过去时,所以时态应该照应.B选项是现在完成时,不合适.

1.Laura (used) to smoke too much,but now she (gives) it up.
例句：
On the other side,where the playground used to be,now stands another new building-ourlibrary.
在过去曾是操场的另一边,现在座落着另一座新建筑——我们的图书馆.
a、used to表示过去常常
b、后半句中,now即“现在”,应用一般现在时,所以gives.
2.Anyone who (A) the rules must be punished.
A.breaks B.breaking C.broke D.break
3.Must I (B) the lift up to the fifty-fifth floor?
A.get B.take C.have D.make
例句：
Let's not take the lift as the lift may become trapped between floors.
咱们还是别乘电梯,因为电梯可能会困在两层楼之间.
take the floor 乘电梯
4.Let me (B) you about myself.
A.say to B.talk to C.speak D.tell to
say是及物动词,可直接加宾语,没有say to用法；
talk to“向/与……说”,例句：
Talk to people that you never talk to before,listen to what they have to say.
跟你之前没有说过话的人说话,聆听他们不得不说的事情.
speak 表示“与……交流,谈话”时,需用 “speak to sb” .
例句：
To youstranger!If you,passing,meet me,anddesire to speak to me,why should you not speak to me?And why should I not speak to you?
陌生人哟,假使你偶然走过我身边并愿意和我说话,你为什么不和我说话呢?我又为什么不和你说话呢?

B

考察宾语从句。宾语从句的考察点：1.连接词；2.语序；3.时态。先从宾语从句的语序入手，应选择陈述句语序，排除A,C，再根据时态，应选择过去时态。故选择B。其中what做主语。

sound like听起来像
what Laura said主语
sounds like谓语
a great idea宾语

肯定是B.what happened
Do you know需要后面跟陈述语序,古排除AC,发生的事实过去是,所以是过去时,只有B符合

B（一般过去式）
A
C
C
我自己做的
请多谅解

B

about

waiting
一堆信件等着她处理

这是宾语从句,主句是一般现在时,理论上从句可以是任何时态.这里上文提到last night ,是个明显的过去时间状语,因而从句也用过去的某种时态为好.
可以改成 where she was ,也就是说 你知道“昨晚”她在哪吗?