We must make ___ to the public that something should be done to stop pollution.
#15707
A
what is clear
B
it is clear
C
it clear
D
that clear
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Never should we forget the war and sufferings ________ caused to the people.
#15327
A
it
B
which
C
that
D
what
---Have you heard of this new computer brand, Mike?---Yes, of course and I’ve decided to buy _____.
#15077
A
it
B
one
C
this
D
that