您现在的位置是:首页 > 学科知识查询 > 小学英语题库

What they doing ? [ ]A. areB. isC. am

编辑:chaxungu时间:2026-04-23 21:52:22分类:小学英语题库

What ____________ they doing ?

[ ]

A. are
B. is
C. amA