Ifyou have any problems, you can ask Dr. Know-all _________ help.A．atB．onC．forD．-组卷网

单项选择适中0.65 引用1 组卷39

If you have any problems, you can ask Dr. Know-all _________ help.

A．at

B．on

C．for

D．with

15-16九年级下·山东临沂·开学考试

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