问题描述:
By the time when the course comes to an end,( )a lot about computer.
(we'll have learned / we'll learn / we're learning / we have learned)
这题应该选什么,说出正确答案的理由和其他三个选项为什么不选的理由,
(we'll have learned / we'll learn / we're learning / we have learned)
这题应该选什么,说出正确答案的理由和其他三个选项为什么不选的理由,
问题解答:
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