【推荐1】English is a very u________ subject and I like it very much.

【推荐2】What do you think is ________ (useful) invention in the world?

【推荐3】Watches are ________ (use), and they can help us know the time.

【推荐1】English dictionaries are very ________ (use) to you when you study English.

【推荐2】I hope my suggestions are ________ (有帮助的) to you.

【推荐3】This book is very________ (有用的) to me. I want to buy it.

【推荐1】Don’t throw those books away! They might be ________(有价值的).

【推荐2】You mustn't be ________ to animals because they are our friends. (kind)

【推荐3】用所给词的适当形式完成句子
1. After working for a long time，he felt very ________ (sleep).
2. My friend gave me a book ________ (read). It was interesting.
3. Today I'm feeling much________ (well).
4. He had a bad cold and ________ (stay)at home for a day.
5. My idea is different from ________   (you).