------ 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
No one in the department but Tom and I_________ that the director is going to resign.
#85643
A
know
B
am to know
C
knows
D
have known
The drug used to treat this disease causes bad side effects, some of which ________ deadly.
#85567
A
is
B
are
C
was
D
were
____of the land in that district ____covered with trees and grass.
#86345
A
two fifth; is
B
two fifths; are
C
two fifths; is
D
two fifths; are