The teacher with his students _____ playing _____football at this tine yesterday.
#41205
A
was; the
B
is;the
C
were ;/
D
was; /
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Do you know the man _______? 
#73787
A
whom I spoke
B
to who spoke
C
I spoke to
D
that I spoke
The professor could hardly find sufficient grounds _____his arguments in favor of the new theory.
#73299
A
to be based on
B
to base on
C
which to base on
D
on which to base
I will stay at home and read books if it _______ tomorrow.
#41356
A
is raining
B
rains
C
rain
D
will rain