_____ we were worried about was _______ they could manage to control the pollution.
#32352
A
That; how
B
That; whether
C
What; that
D
What; whether
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The police got to an old school _______the farmers used as a store.
#32026
A
that
B
what
C
where
D
when
As the sea ice melts sooner each swimmer,polar bears are forced to come ashore earlier and face food shortages _____ they have stored enough fat to last them through the season.
#31875
A
before
B
unless
C
since
D
until
The last factory ______ I am going to visit is the place _____ my mother worked five years ago.
#33471
A
which; where
B
that; where
C
where; where
D
that; which
– I wonder how much you charge for your services.-- The first two are free ____ the third costs $30.
#80584
A
while
B
until
C
when
D
before