阿摩線上測驗
Many experts are convinced that the Greenhouse Effect is irreversible, _____ they advise us to plan now for how to cope with environmental changes.
(A)so
(B)for
(C)because
(D)yet
答案：登入後查看
統計： A(781), B(24), C(86), D(17), E(0) #395123
統計： A(781), B(24), C(86), D(17), E(0) #395123
