David,turn off the TV ___ no one is watching it.But it ____ off already!The music is from the radio.A so that,has been turned B when ,has turned C if ,has been turned D because ,has turned可是为啥 if后面接的是is watching 而不是watches为
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/08 04:34:43