I found it quite necessary a foreign language.A. learingB. to learnC. learnD. to learning

发布时间：2020-08-16 18:38:35

I found it quite necessary      a foreign language.
A. learing
B. to learn
C. learn
D. to learning

网友回答

A. learing
(答案→)B. to learn
C. learn
D. to learning
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