连词组句。

1. have, I, a, don't, bat, baseball 

   _____________________________.

2. your, it, backpack, is 

   _____________________________?

3. likes, for, Tom, bread, breakfast 

   _____________________________.

4. what, her, number, telephone, is 

   _____________________________?

5. books, the, bookcase, in, the, are 

   _____________________________.

一艘轮船从甲港顺水航行到已港，立即逆水返航到甲港，共用8小时，已知轮船顺水速度比逆水速度每小时快20千米，又知前4小时比后4小时多航行60千米，问两地路程？