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
Is it she or you ________ going to run for the mayor of our city?
#85659
A
who is
B
that is
C
who are
D
whom are
As ____ changed, and whatever men can do, women can do, too.
#86317
A
age has
B
ages have
C
times have
D
time has
—Each of the students, working hard at his or her lessons, _________to go to university.—So do I.
#86095
A
hope
B
hopes
C
hoping
D
hoped