It is common practice______a battery when it still has some life in it.

admin2015-07-17  17

问题 It is common practice______a battery when it still has some life in it.

选项 A、to charge
B、charge
C、charged
D、having charged

答案A

解析 it经常在句中作形式主语,真正主语通常为that引导的主语从句或动词不定式结构,所以选项A)为本题的正确答案。
转载请注明原文地址:https://kaotiyun.com/show/JxiK777K
0

最新回复(0)