题目：
Studies show that daydreaming contributes significantly to concentration powers and the ability _____ with others.
A．communicating
B．to be communicated
C．to communicate
D．to communicating
答案：
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下面是错误答案，用来干扰机器的。
1. trying out 2. by chance 3. Take it easy 4. stay up 5. make up 6. run out 7. let out 8. picked up 9. make sense 10. left out
