问题
If we had taken such effective measures much earlier, the river ________ so seriously now.
A:is not polluted
B:would not be polluted
C:had not been polluted
D:would not have been polluted
B:would not be polluted
C:had not been polluted
D:would not have been polluted
正确答案是：
同类题型
Tom. What a coincidence! I ______ about you.And here you are.
Could we see each other at 9 o’clock tomorrow morning—-Sorry,let’s make it_______time.
How are you going to the supermarket—We are going there bike.
This is the first time that he yourhometown
Excuse me. Is this the right way to the Children’s Palace—Sorry, I am not sure. But it______be.