阿摩線上測驗
29. Diamonds are precious stones buried deep under the ground, ___________, are perfectly white.
(A)when, pure which
(B)when, which pure
(C)which, when pure
(D)which, pure when
答案：登入後查看
統計： A(49), B(124), C(192), D(60), E(0) #537090
統計： A(49), B(124), C(192), D(60), E(0) #537090
