16. The popular hotel requires guests to make a _________ for their rooms in advance to ensure there
are enough rooms available during peak seasons.
(A) observation
(B) reservation
(C) evaluation
(D)
conversation。
答案:登入後查看
統計: A(8), B(136), C(3), D(5), E(0) #3270052
統計: A(8), B(136), C(3), D(5), E(0) #3270052