问题
填空题
根据句意和首字母填写单词。
1. Recycling the r_____ is a good way to improve our environment.
2. Tom felt r_____ when he heard the good news.
3. Edison did quite a lot of e_____.
4. You can use some s_____ instead of words to take notes.
5. The teacher used a lot of r _____ to make her class more interesting.
答案
1. rubbish 2. relaxed 3. experiments 4. symbols 5. riddles
