Professor Smith, along with his assistant, ________on the project day and night to meet the deadline.
#85952
A
work
B
working
C
is working
D
are working
推荐题目
The words that we should pay attention to_______on the blackboard.
#44136
A
is writing
B
being written
C
are written
D
writing
Most of what has been said about the Smiths also ____true of the Johnsons．（2006年安徽高考）
#86313
A
are
B
is
C
being
D
to be
____ a lot of books for your classmates next term?
#43885
A
Are there will
B
Will there be
C
Will there are
D
Will be there
That building is now a supermarket. It ______ a cinema.
#44091
A
was
B
is used to be
C
used to be
D
would be