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
The chief________of the year 2010 for Shanghai will be the Expo.
#4788
A
incident
B
event
C
affair
D
accident
I will never forget the day _______ I came to my university and the day ______ I spent in a new city.
#4966
A
when; which
B
which; when
C
what; that
D
on which; when
It is illegal for a public official to ask people for money ____ favors to them.
#4649
A
in preference to
B
in place of
C
in agreement with
D
in exchange for
Mark was a student at this university from 1999 to 2003, ____ , he studied very hard and was made Chairman of the Students' Union.
#4898
A
during which time
B
for which time
C
during whose time
D
by that time