Truly speaking, even if English learners have memorized thousands of words and dozens of grammar rules, they can still （）upon a mysterious invisible block.

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Truly speaking, even if English learners have memorized thousands of words and dozens of grammar rules, they can still （）upon a mysterious invisible block.

A.stumble

B.invisible

C.intentionally

D.equipped

正确答案：A

Tag：英语口语直通车时间：2021-03-29 21:07:03

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