几个初中英语问题（连词）

The book was so interesting that he had read it for three hours__before_ he realized it.
A when B until C after D before

Will you come over __to__ have coffee with me this weekend?

You'll have to wait __until_ help comes, because there's no other way.

You can't make progress __unless__ you devote more time.

The clouds are gathering . It looks __that__ it is going to rain.

We haven't decided __when__ and __where__ to meet next time.

根据中文，完成英语句子

虽然中国现在不富裕，但我们正努力改变她。

__Although___ China is not rich now, __yet__ we are working to change her.

为了赶上早班汽车，你最好尽快起床。

You'd better get up __as__ _soon___ __as__ possible __so__ __that__ you can catch the early bus.

句型转换

I don't know how I can get to the nearest post office.

I don't know __how__ __to__ _get___ to the nearest post office.

The book was so interesting th