That art center is _______ used to be a factory, ______ millions of tractors were produced.
#32991
A
what; where
B
where; where
C
what; which
D
where; which
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In time of serious accidents, ________ we know some basic things about first aid, we can save lives.
#30162
A
whether
B
until
C
if
D
unless
I always take something to read when I go to the doctor’s __________ I have to wait.
#80644
A
In case
B
so that
C
in order
D
as if
______ is amazing to us is ______some plants can sense the soft touches of the insects on the leaves.
#32750
A
That; that
B
What; what
C
What; that
D
That; what