【题目】Look! Mary____ doing ____homework.
A. is; one's B. is; her C. are; his
【答案】B
【解析】现在进行时态构成be doing.

编辑:chaxungu时间:2026-04-11 01:02:01分类:小学英语题库
【题目】Look! Mary____ doing ____homework.
A. is; one's B. is; her C. are; his
【答案】B
【解析】现在进行时态构成be doing.
