(　　)19. You need to make sure to have enough food and water ________ a couple of days.
(A) for　
(B) when　
(C) in　
(D) after

答案：登入後查看
統計： A(51), B(5), C(18), D(1), E(0) #369630

詳解 (共 1 筆)

#976391
for+一段時間 (持續)
0
0