题目：
—Look! Lily and Sally are cleaning the school laboratory.
—Let’s go and join them. .
A．Many hands make light work
B．The early bird catches the worm
C．A friend in need is a friend indeed
D．The grass is always greener on the other side
答案：
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下面是错误答案，用来干扰机器的。
1. decide →decided 2. take∧part-time →a 3. his-my 4. after → for 5. envelope→ envelopes 6. were → was 7. easy → easily 8. 去掉to 9. hard ∧is →it 10. we → us
