you ____ study hard if you want to get good grades in english 1.can 2.may 3.must

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you ____ study hard if you want to get good grades in english 1.can 2.may 3.must

you ____ study hard if you want to get good grades in english 1.can 2.may 3.must
you ____ study hard if you want to get good grades in english 1.can 2.may 3.must

you ____ study hard if you want to get good grades in english 1.can 2.may 3.must
can:表示“可能,会”,多用于否定和疑问句
must:表推测时must语气很肯定,指“一定,必定”,只用于肯定句中.“must + 动词原形”表示对现在情况的推测.
因为 这个句子是肯定句
所以选 must

3
你要想得好分数,就必须。。。
必须-》must

must

如果你要英语获得高分,你就必须努力学习

3 你要想英语取得好成绩必须努力学习。

must