请问下面的英语单选怎么选择,You can take as many as you like because these hand_英语解答

请问下面的英语单选怎么选择,
You can take as many as you like because these handouts are free of ________.
A.fare B.charge C.money D.pay

人气：170 ℃　时间：2020-05-13 11:16:23

解答

B
free of charge免费.这个是固定用法,固定搭配.
其它的表达都不对!必须是B