— Why does the lake smell terrible?— Because large quantities of water ____.
#85686
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
推荐题目
The country’s population small, and most of its population in the mountainous areas.
#86002
A
are; lives
B
are; live
C
is; live
D
is; lives
It is the most severe situation _______ Japanese _______.
#85716
A
that, has faced
B
where, has faced
C
that, have faced
D
where, have faced