问题补充:
The price of cell phones recently.
A. has been raised
B. has been risen
C. has been fallen behind
D. has been broken down
答案:
(答案→)A. has been raised
B. has been risen
C. has been fallen behind
D. has been broken down
解析:考查动词及短语在被动句中的用法辨析。只有raise为及物动词。B 为不及物动词;C,D为不及物动词短语,不能用于被动语态。