3. In other developed countries, buildings are constructed from stronger things, for example concrete walls are _______with steel rod.
(A) reinforced
(B) enforced
(C) installed
(D) withdrew
答案:登入後查看
統計: A(0), B(3), C(0), D(0), E(0) #3351904
統計: A(0), B(3), C(0), D(0), E(0) #3351904