阿摩線上測驗
6. Can you look _____ the elderly guest when he arrives? He might need
help.
(A) at
(B) on
(C) over
(D) after
答案：登入後查看
統計： A(33), B(7), C(16), D(89), E(0) #1784583
統計： A(33), B(7), C(16), D(89), E(0) #1784583