情态动词表推测（must/might/could/can't） — 英语填空题
题目
用 must, might, could 或 can't 填空（每空一词）。1. The basketball on the playground can't be Tony's. He is in the library now, so it ___ be Jack's or Peter's. 2. Look! The notebook has Wang Lin's name on it. It ___ be his. 3. That small shoe can't be Mr. Li's. He has big feet, so it ___ be his son's.