Mary waited here (for three hours).对括号内提问 ————— ————— ————— Mary _____ here?
问题描述：
Mary waited here (for three hours).对括号内提问 ————— ————— ————— Mary _____ here?
答
Mary waited here (for three hours).对括号内提问 How long did Mary wait here?
答
——How——— ——long——— ——did——— Mary _wait____ here?
答
How long did Mary wait here
答
How many hours did wait
有不会的可以再问我