阿摩線上測驗
22 Occasionally, ________happens unexpectedly, so it's always a good idea to fasten your seatbelt.
(A) turbulence
(B) investment
(C) evaluation
(D) character
答案：登入後查看
統計： A(168), B(10), C(22), D(4), E(0) #3362546
統計： A(168), B(10), C(22), D(4), E(0) #3362546
