The old man has two sons，________is a soldier.
#67015
A
one of whom
B
both of them
C
all of whom
D
both of whom
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Mother bought me 3 books on English study, the second ________ I really liked.
#73091
A
of that
B
of which
C
that
D
which
______ he referred to in his article was unknown to the general reader.
#73865
A
That
B
What
C
Whether
D
Where
I don’t believe the reason ____ he has given for not coming to the lecture.
#73200
A
why
B
that
C
how
D
what
_____________ leaves the room last ought to turn off the lights.
#74044
A
Anyone
B
The person
C
Whoever
D
Who