用括号内所给词的适当形式填空

1. I'm __________(save) the money for my new bike.

2. If I had a 3-day holiday, I would go __________(sail). I think it would be

    very __________( fascinate).

3. Would you like __________(join) a swimming club?

4. He __________(buy) an apartment to live in.

5. We __________(especial) love hiking and swimming.

减少管道内流体损失的方法有哪些？