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I think         necessary to do some running in the morning.
#54859
A
it
B
that
C
this
D
one
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推荐题目
Is this ________ bike? No. ________ is over there.
#52499
A
your; my
B
you; I
C
your; mine
D
yours; mine
They found ­_______very hard to move the stone.
#54355
A
it
B
its
C
this
D
that
——Is this your ruler?  ——No, it’s       
#54848
A
his
B
her
C
mine
D
your
—______ is she?—She’s fine.
#39692
A
What
B
How
C
What’s
D
Who
_____you do, don’t miss this exhibition, for it’s so hard for me to get the tickets.
#54550
A
Whatever
B
However
C
Whenever
D
Whether