20. The new janitor, _____ the remodeled security system, triggered the alarm by accident.【請在下列各題中選出最適當的答案】
(A) never understand
(B) not been understood
(C) not to know
(D) not understanding

答案：登入後查看
統計： A(65), B(78), C(43), D(275), E(0) #1995338

Yubin

B2 · 2019/05/30

#3384500

5ceec31ad17ba.jpg#s-732,1024

【已上108台中郵局內勤】感嘆阿摩讚嘆阿摩

B1 · 2019/05/23

#3369531

（文法題）（單字補充）

The new janitor, ＿＿＿ the remodeled security system, triggered the alarm by accident.

新的管理員，不了解改造後的安全系統，意外觸發了警報。

（單字補充） janitor 管理員

＿＿＿ the remodeled security system 為補充解釋the new janitor

(A) never understand
(B) not been understood
(C) not to know
(D) not understanding