It is no use __________ to remember only grammar rules.A.tryingB.tryC.to tryD.tried

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It is no use __________ to remember only grammar rules.

A.trying

B.try

C.to try

D.tried

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。