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 。or You will be the last one 。请快点,否则你将是最后一个。2。He has been working for four hours 。so He is very tired now 。他工作了好几小时,所以现在有点累。3。Jane must be very disappointed 。because She didn't pass the driving test again 。简一定很失望,因为她又没通过驾驶测试。4。He has no car 。because He has no money to buy one 。他没有车,因为他没钱买。5。You can come over for the book 。or I will go to send it 。你可以自己来拿书,或者我送过去。