五條英文問題

thanks a lot!!

1. There are many advantages to keeping one's weight down.
點解用keeping?

2. The one-child policy, though now (is) more relaxed, has ...
個is洗唔洗加?

3. ...has prompted many urban parents to spoil their ___ offspring.
用treasurable or treasured?

4. A great deal ___ either worthless or require a lot of willpower to work.
用is or are?

5. Young people should strike a balance between studying (books) and doing exercise.
個books洗唔洗加?