He is the only one of these boys who ___ the violin well.
A.play
B.plays
C.played
D.should play
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The Blacks demanded that their living and working conditions ___.
A.improved
B.should improve
C.should be improved
D.were improved
I'd like to live somewhere ___ the sun shines all year long.
A.which
B.of which
C.where
D.at where
Jane never married because her father didn't ___ to her marriage to a man she loved.
A.consent
B.confirm
C.contend
D.conceive
My uncle was made ___ his research work due to his ill health.
A.giving up
B.to give up
C.given up
D.give up