More historical buildings in the old town will fall down ________we try our best to protect them.
#55384
A
if
B
since
C
unless
D
in order that
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 –______is the jacket?   –It’s green.
#56075
A
Where
B
How
C
What’s
D
What color
Amy was reading a book           I came in.
#56387
A
when
B
while
C
because
D
though