A-A+ He's watching TV？ He's______to be cleaning his 2022-08-06 15:15:00 问答库 阅读 179 次 问题详情 He"s watching TV？ He"s______to be cleaning his room.A．knownB．supposedC．regardedD．considered请帮忙给出正确答案和分析，谢谢！ 参考答案 正确答案：B解析：“be supposed to do sth．”构成固定用法，意为“should do sth．”。
