（2010·长春模拟) she is not so cheerful she used to be?
#85324
A
How is it that；as
B
Why is it that；what
C
Is it why；that
D
How it is that；as
推荐题目
— Is it my age ______ the boss minds?—I’m afraid so. He will consider _____ necessary to have an experienced assistant.
#85190
A
which；it
B
that；it
C
which；that
D
that；that
It was __________ back home after the experiment.
#85394
A
not until midnight did he go
B
until midnight that he didn’t go
C
not until midnight that he went
D
until midnight when he didn’t go
It was not until this year _____ scientists managed to make a cat and a goldfish disappear from sight using an invisibility cloak(斗篷)
#84835
A
that
B
when
C
while
D
As
It was his nervousness in the interview ____probably lost him his job.
#85527
A
which
B
since
C
that
D
what
--- Have you really been to visit the Bird’s Nest in Beijing? ---- I ______ it last summer vacation.
#84816
A
do visited
B
do visit
C
did visited
D
did visit