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 Without facts , a person can’t form a correct opinion , for he needs to have actual knowledge _____ his thinking .
#72414
A
which to be based on
B
on which to base
C
which to be based
D
which to base
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It was not until he became very ill ______ he went to see a doctor.
#69222
A
what
B
that
C
when
D
then
---- Is it high time that we _____ on the school building? ---- Yes, it _____.   
#73483
A
do some repairs; is
B
do some repair; is
C
did some repairs; is
D
did some repair; was
He isn't such a man ______he used to be.
#73832
A
who
B
whom
C
that
D
as
I know       he said so at the meeting is true.
#72609
A
what
B
how
C
why
D
that
I didn't know _____ you were getting on well with your work. 
#71978
A
because
B
how
C
that
D
which