— 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 number of people in the party _____fifty, but a number of them ____ absent for different reasons.
#85942
A
were; was
B
was; was
C
was; were
D
were; were
Modern teaching equipment as well as some computers _______ to the village school last week.
#85632
A
were sent
B
was sent
C
has been sent
D
had been sent
There ________ a football match between Class 1 and Class 3 next week.
#43901
A
have
B
has
C
is going to have
D
is going to be
The teacher together with the students ________ discussing “Reading Skills” that ________ newly published in America.
#85663
A
are ; were
B
is ; were
C
are ; was
D
is ; was