问题
The water in the river isn’t fit to drink, for you know, it __________.
A:was polluted
B:was polluting
C:had been polluted
D:has been polluted
B:was polluting
C:had been polluted
D:has been polluted
正确答案是：
同类题型
It was March 14th．2013__________Xi Jin ping was elected chairman of the People’s Republic of China
Mrs. Brown really ____ go on a diet. She has put on so much weight since she gave up jogging.
It is believed ______ children should learn to be responsible from the very beginning．
A friend of my ____ and I are going to visit_______ next week.