------ Why does the lake smell terrible? ------ Because large quantities of water _________.
#85918
A
have been polluted
B
has polluted
C
have polluted
D
has been polluted
推荐题目
Professor Smith, along with his assistants, _____on the Project day and night to meet the deadline.
#85684
A
work
B
working
C
is working
D
are working
A recent survey shows that the number of children who from the countryside with their parents ________nearly 320,000 in Beijing.
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A
comes; are
B
come; is
C
come; are
D
comes; is