–Little boy, don’t play with the knife, __________ you’ll cut your hand.  –Sorry, I won’t.
#58250
A
so
B
and
C
or
D
but
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The boy doesn’t speak       his sister, but his written work is very good. 
#58140
A
as well as
B
so good as
C
much better than
D
much worse than
—It’s very hot in the room! --_______ the door open?
#55563
A
Why don’t keep
B
Why don’t to keep
C
Why not keep
D
Why not you to keep