If we ______ in this practice gradually well learn how to express ourselves in English.A.

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If we ______ in this practice, gradually well learn how to express ourselves in English.

A.insist

B.adhere

C.persist

D.maintain

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_________。