21. 
(a) Before  diamonds can be used 
(b)as jewels , they
(c)must be  cut and 
(d)polish   (Error Correction)

答案:登入後查看
統計: A(18), B(40), C(38), D(305), E(0) #382826

詳解 (共 1 筆)

#1354463
Polished
7
0