是were doing 还是were did
was/were后接doing还是did
were sb doing还是were sb did sth?
是did you happy 还是 were you happy?
what did you do 与what were you doing
what were you doing 为什么是were不是what
英语,were doing?
what were you doing?
were doing和are doing
是Where did you read a book yesterday?还是Where were you read a
是Did you come to school last sunday?还是Were you come to schoo
为什么你成功了?英语翻译.是why did you succeed ?还是what were you succeed ?
是where did you phll up carrots last weekend?还是where were you