_______ is known to everybody, the moon travels around the earth once a month. .
#77621
A
It
B
As
C
That
D
What
推荐题目
I can never forget the days _____ we worked together and the days ______ we spent happily together.
#77522
A
for which; that
B
which; when
C
when; which
D
on which; when
I can’t thank him too much, ____________ I couldn’t have finished the project in time.
#75916
A
without his help
B
with his help
C
without whose help
D
with whose help
At the party,John made up a joke,________ people burst out laughing. 
#75607
A
on which
B
by which
C
at which
D
from which