用恰当的连词将下列每两个句子合并为一个句子.我不懂、最好能给我解析.
1.Please hurry up .You will be the last one .
2.He has been working for four hours .He is very tired now .
3.Jane must be very disappointed .She didn't pass the driving test again .
4.He has no car .He has no money to buy one .
5.You can come over for the book .I will go to send it .