.Mr. White has been invited to the celebration _________ tomorrow afternoon.
#4742
A
held
B
being held
C
to be held
D
to hold
推荐题目
 No sooner ______ on board the train than it______ to move.
#4621
A
did he go; had started
B
he went; started
C
had he gone; started
D
he had gone; had started
Only when __________________ permission _______________ allowed to enter the lab.
#4817
A
a teacher has given; are the students
B
has a teacher given; are the students.
C
has a teacher given; the students are
D
a teacher has given; the students are
____ the risk of a shark attack, you should follow these suggestions.
#4542
A
Reduced
B
To reduce
C
To reducing
D
Reduce
They use computers to keep the traffic _______ smoothly. 
#5026
A
being run
B
run
C
to run
D
running
The police were seeking more information to find out ______ the rich merchant.
#59072
A
who was it that killed
B
who it was that killed
C
it was who killed
D
who was it killed