问题

Why does the river 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
Tom is a _______ person. He thinks no one can besuccessful without ________.
To understand the grammar of the sentence, you must break it __________ into parts [ ]
My mom is from Germany and my father is from______ .
____________ catch the early bus, he got up early in the morning.
The underlined part in the word “exercises” is pronounced (发音) as ________.