quickshe doesn't come to the party today ,she _____busyA,maybe B,may be C.must D.may

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quickshe doesn't come to the party today ,she _____busyA,maybe B,may be C.must D.may
quick
she doesn't come to the party today ,she _____busy
A,maybe B,may be C.must D.may

quickshe doesn't come to the party today ,she _____busyA,maybe B,may be C.must D.may
busy是形容词 前面必须有谓语 且不能仅有一个情态动词做谓语,要么是实义动词 要么是情态动词加be/do
这道题是表示推测 而情态动词 may must等可表示推测 ,一个是委婉 一个是强烈的 可能性较大的推测 所以只能选 B

选b,情态动词+be动词原形,a是副词,c/d缺乏谓语部分。