____ printed, this science fiction will be popular among the students.
#67782
A
Before
B
Unless
C
When
D
Once
推荐题目
__________for the bus, I heard a noise,
#69550
A
While waiting
B
While I waiting
C
I was waiting
D
Waited
By serving others，a person focuses on someone other than himself or herself，______ can be very eyeopening and rewarding.
#72267
A
who
B
which
C
what
D
that
Africa is actually connected with Asia at the spot ___ the Suez Canel was dug.
#71697
A
when
B
where
C
which
D
and
As days go on, I think that Beijing will become ______ the whole world pay close attention to.
#69879
A
where
B
what
C
which
D
that