Was your mother at the park last night?
Was Mr Ma in the library yesterday evening?
Were your friends in Bdjing last year?
Were your grandparents busy last weekend?
Did he do his homework just now?
Did you help your teachers clean the room?
祝：学习进步,更上一层楼! (*^__^*)
不明白的再问哟,请及时采纳,多谢!