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
As ____ changed, and whatever men can do, women can do, too.
#86317
A
age has
B
ages have
C
times have
D
time has
Three-fourths of the buildings ______.
#85968
A
was destroyed
B
is destroyed
C
were destroyed
D
has been destroyed
The number of people invited _____ fifty, but a number of them ____ absent for different reasons.
#85932
A
were; was
B
was; was
C
was; were
D
were; were
The secretary and principal ________ at the meeting now.
#86331
A
are speaking
B
is speaking
C
were making a speech
D
have a speech