Tom is not good at maths.He ____________ study it hard.
Tom is not good at maths.He ____________ study it hard.
英语人气:276 ℃时间:2019-10-02 22:23:53
优质解答
should 应该A. can B. isC. have toD. has to 四选一D 不得不(主语第三人称单数用has to)
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