Do you have any problems ____ English?a.learen b.to learn c.learning d.learn 答案选b还是c
问题描述：
Do you have any problems ____ English?
a.learen b.to learn c.learning d.learn
答案选b还是c
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Do you have any problems ____ English?a.learen b.to learn c.learning d.learn 答案选b还是c