Professor Smith,along with his assistants,       on the project day and night to meet the deadline.
#86243
A
work      
B
working
C
is working
D
are working
推荐题目
---There______ a concert this evening.---Yes.Exciting news.
#43613
A
are going to be
B
is going to be
C
is going to have
D
will have
They ________ healthy and they _______healthy food.
#44216
A
all are, often eat
B
are all, eat often
C
all are, eat often
D
are all, often eat
--Why does the lake smell terrible?    ---Because large quantities of water ______.
#85773
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted