4. It's crucial to get a _________ for COVID-19 to prevent the disease from spreading.
(A) question
(B) puzzle
(C) vaccine
(D) riddle
答案:登入後查看
統計: A(12), B(20), C(356), D(25), E(0) #3153130
統計: A(12), B(20), C(356), D(25), E(0) #3153130