19.Wearing a mouth mask is required to prevent people __________ being infected by H1N1.
(A) from
(B) by
(C) to
(D) of

答案：登入後查看
統計： A(69), B(6), C(12), D(1), E(0) #667614

詳解 (共 1 筆)

#2616789
Wearing a mouth mask...
(共 113 字，隱藏中）
前往觀看
4
0