______, he can quickly find out what’s wrong with the machine.

admin2014-10-11  22

问题 ______, he can quickly find out what’s wrong with the machine.

选项 A、Having been well trained
B、Having well trained
C、To be well trained
D、To have been well trained

答案A

解析
转载请注明原文地址:https://jikaoti.com/ti/xc1MFFFM
0

随机试题
最新回复(0)