问题

Why does the lake smell terrible?—Because large quantities of water
A:have polluted
B:is being polluted
C:has been polluted
D:have been polluted
B:is being polluted
C:has been polluted
D:have been polluted
正确答案是:
同类题型
me! It’s you, Bob! I ______ to recognize you at first sight!—Nor did I! Time has changed us a lot!
In a text message, 88 means Bye-bye. — And another example is F2F______ stands for face to face.
I didn’t have to work all weekend — I didit by _______.
Look at the clouds. It is going to rain.—-______ . Let’s go home quickly.
The job interview is a challenge _______ the ability and talent of each interviewee is tested.