情态动词用法小结 — 英语填空题
题目
用 can't, must, should, may 的适当形式填空（每空一词）。1. The light is off, so he ___ be at home now. 2. Students ___ use phones in class. It's against the school rules. 3. You look tired. You ___ go to bed early tonight. 4. —Who is knocking at the door? —It ___ be Tom, but I'm not sure.