阿摩線上測驗
18. The researchers found the participants ______ significantly better when exposed to authentic input.
(A)perform
(B)to perform
(C)performing
(D)performed
答案：登入後查看
統計： A(13), B(2), C(20), D(16), E(0) #3866632
統計： A(13), B(2), C(20), D(16), E(0) #3866632
