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
Stop ______ a noise in the library .The students are reading books .
#43845
A
make
B
to make
C
makes
D
making
“39 Steps”is one of the most exciting films_________ directed by my brother.
#85708
A
which were
B
which was
C
that was
D
that were