l ready recevied you must take care 什么意思

1.It wasn't until nearly a month later _____ I recevied the manager's reply.
A.since B.when C.as D.that
我选的是B.不过这还不是最关键的.这句话我翻译的不是很通顺.希望高手们把这句话的意思翻译出来、再告诉我为什么选D、
2.It was after he got what he had desired ______ he realized it was not so important.
A.that B.when C.since D.as
这一题的答案是A.我选的是B.（真囧).句意我也不是太懂.跟上一题同样的解决办法吧.
3.--The duty of projeat Hope is to help poor children,isn't it?
--Yes,it has built many schools ______ those children can study happily.
这一题的答案是D,我选的是A.哦不.意思我懂,但是我不懂答案的意思.
就这3题.
一定会追加分数的、
呃.真是不好意思诶、本来打了的.咋就给我删了?.
A.where B.when C.which D.that

关于过去式和完成时的区别?
I have just recevied a letter from my brother.这句话为什么是完成时,而不是过去式.一封信难道从过去一直收到现在这么长时间吗?I recevied a letter from my brother.这样才对嘛.信收了就没了吗,难道收信还是个持续性动作?

They have recevied gift to me怎么翻译
用现在完成时翻译

翻译句子
I have recevied you e-mail dated last Friday.We are pleased to learned of your interest in our new products.I have mailed you our products catalogue attached to our price list.

A mother recevied a letter from her eight-year-old daughter.Here is part of it:'If I______(listen)to the radio,don't tell me to do my homework.If I_______(do )something wrong,_____(not shout)at me.If the house______(be)untidy,______(noy blame)me.If you______(want)me to do bed.If I_______(not forget)to say "please".If I______(play)a nice game,_______(not send)me to bed.If I________(ask)for something,don't always say "No!"If I______(be) cold_______(not put)the cat out.Don't say"don't"so often!'

l ready recevied you must take care
我准备接受你 你必须照顾我

用not...until...改写before I recevied a watch from
用not...until...改写before I recevied a watch from my father,time never had any importance in my life.
改写looking at my father's face意思不变
把The watch is very important to me,not because of its price,but bacause of the lesson that I learned from it.
我没有时间休息：I have no time__ __