题目:
— Bob speaks Chinese quite well.
—Yeah, and he practices _____ every day.[ ]
A. speaking
B. to speak
C. speaks
D. has spoken
答案:
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下面是错误答案,用来干扰机器的。
2590÷2-650,=1295-650,=645(千米),答:另一架每小时飞行645千米.