根据句意完成句子.Helen dances for about two hours every day．I think she must （ ）after that

题目

根据句意完成句子.Helen dances for about two hours every day．I think she must （ ）after that
根据句意完成句子。Helen dances for about two hours every day．I think she must （ ）（be tired）after that

答案

must 作为情态动词,后面直接接动词原形,对于比动词,那就直接是be.所以正确答案是be tired 同时还有一点要注意的就是,tire的形容词形式就是tired.