at the beginning of class,the noise of desks__could be heard

来源：学生作业帮编辑：灵鹊做题网作业帮分类：英语作业时间：2024/05/02 17:14:13

at the beginning of class,the noise of desks__could be heard outside the classroom.
A opened and closed B being opened and closed C to be opned and closed D to open and close

选B
在教室外能听见桌子开开合合的声音...说明听这个动作与桌子的声音是同时进行的,桌子正在发出的声音,用进行时
其次,桌子被打开合上不可能是桌子自己打开合上...所以用被动
因此应该选进行被动只有B

at the beginning of class,the noise of desks__could be heard at the beginning of class ,the noise of desks 非谓语动词 At the beginning of the class,the noise of At the beginning of class,the noise of desks _______ could b [-A72] At the beginning of class ,the noise of desks ______ At the begining of class,the noise of desks___ could be hear they heard the noise of The teacher handed _____books at the beginning of the class. the noise of _____could be heard in the street The noise of _______could be heard out in the street. at the beginning of 造句是at the beginning of 还是at beginning of