题目内容
() 9. The robot needs ,but you do that yourself.
A. checking; needn’t B. checking;needn't to
C. to check; don't need to D. to check; don't need
9.A
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题目内容
() 9. The robot needs ,but you do that yourself.
A. checking; needn’t B. checking;needn't to
C. to check; don't need to D. to check; don't need