用who提问．That's Lin Jiang. 用where提问．They are at school.

用who提问．That's Lin Jiang. 用where提问．They are at school. 用 where就括号部分提问:They are having a birthday party (at home). They are in the clssroom（用where 提问） They are waiting for mary.用who对mary提问 They are (at the doctor's).括号部分提问 They go to school at 7 o'clock.(they划线部分提问）用who是一定的,那后面怎样? The presents are from my friends.对my friends 提问.用who还是where? His sister is at school.请用at school 提问 They have lunch at school 对at school提问 They are at the doctor's 对at the doctor's提问. where are they from的同义句 she lives in new york用new york提问 We are playing basketball at school(对at school提问)