情态动词表示推测与许可 — 英语填空题
题目
用 must, can't 或 may 完成句子（每词限用一次）：1. He ___ be at home; I saw him leave for the airport ten minutes ago. 2. She looks tired, so she ___ have worked late last night. 3. — ___ I use your phone for a moment? — Yes, of course.