阿摩線上測驗
23. The meeting started 4 hours ago and is still ________. Most people felt exhausted and find it hard to
stay alert.
(A) in session
(B) on call
(C) off guard
(D) by chance
答案：登入後查看
統計： A(140), B(32), C(3), D(1), E(0) #2406763
統計： A(140), B(32), C(3), D(1), E(0) #2406763
