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
推荐题目
Marty as well as his parents _________ to the opening ceremony the other day.
#4533
A
has invited
B
have invited
C
was invited
D
were invited
Don’t leave matches or cigarettes on the table within ______of little children.
#4827
A
hand
B
reach
C
space
D
distance
.Mr. White has been invited to the celebration _________ tomorrow afternoon.
#4742
A
held
B
being held
C
to be held
D
to hold
. To the surprise of many people, in ten years the city’s population ____ by 12%.
#4688
A
gained
B
expanded
C
developed
D
spread