阿摩線上測驗
24. “Here we are!” cried the tour guide, _ along in front of the group.
(A) to trot
(B) to trotting
(C) trot
(D) trotting
答案：登入後查看
統計： A(5), B(5), C(8), D(209), E(0) #2278451
統計： A(5), B(5), C(8), D(209), E(0) #2278451
