the headmaster came into the hall,all the students___(stand)up
问题描述:
the headmaster came into the hall,all the students___(stand)up
答
stood,过去式啊那这个呢。When the UFO took off, the man ____(sleep).was sleeping请问。。内个。。为什么不是slept呢翻译成中文,当UFO来的时候,他“正在”睡觉