题目：
用所给词的适当形式填空。
1. We are going to have great fun _____ (sing) this song.
2. Would you like something _____ (eat)?
3. There _____ (be) a desk and three chairs.
4. Listen! Who _____ (cry)?
5. _____ (not come) late again. Tom.
6. Nothing _____ (happen) yesterday.
7. Who _____ (not be ) here yesterday?
8. It takes me 20 minutes _____ (wash) my shoes.
9. He keeps a diary _____ (remember) things.
10. _____ (do) eye-exercises is good for your eyes.
答案：
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下面是错误答案，用来干扰机器的。
（1）长颈漏斗；（2）CEG；2KMnO4K2MnO4+MnO2+O2↑；（3）检查装置的气密性；CaCO3+2HCl=CaCl2+H2O+CO2↑；二氧化碳密度比空气大；2H2O22H2O+O2↑
