--What was Wang Tao doing at that time?--I"m sure he must have been playing the piano.为什么这里用must have been playing,不是完成进行时吗?说明现在还在做唠?----------------------------------------------------------------As we now
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 04:06:55
xTn"GJV&kd+GuX5!^LHC/!:83QQVi T{9uw(9Q"Fgkuif+Ř