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
______ students up to 2, 000 , the school has built another laboratory．
#4643
A
As
B
For
C
with
D
Since
The president, as well as his bodyguards, _______ to the nuclear station(核电站), _______ there was an accident 20 minutes ago.
#4697
A
have come ; which
B
come; in which
C
has come ; where
D
came; in where
We have heard of many cases _______ some citizens ，especially some famous people， have suffered because personal information had been leaked.
#4968
A
why
B
which
C
as
D
where
He is really considering ______ himself to ______ these children of the poor mountain village.
#4822
A
to devote; educating
B
devoting; educating
C
devoting; educate
D
to devote; educate