问题
选择题
_____ we were worried about was _____ they could manage to control the pollution. |
A. That; how B. That; whetherC. What; that D. What; whether |
答案
答案:D
_____ we were worried about was _____ they could manage to control the pollution. |
A. That; how B. That; whetherC. What; that D. What; whether |
答案:D