A.possibility
B.opportunity
C.proposal
D.prospect

A.broken
B.cracked
C.bent
D.flat

A.If he studied more
B.If he were studying to a greater degree
C.Studying more
D.Had he studied more

A.impress
B.impressive
C.impression
D.impressionist

A.had looked cautiously before
B.looked with cautioned after
C.was looked cautious when
D.looks cautious when

A.at-on
B.in-for
C.on-for
D.over-for

A.take over
B.result in
C.hold on
D.keep to

A.that
B.whom
C.which
D.who

A.although
B.because of
C.in spite of
D.because

A.have I seen
B.have you seen
C.if I had seen
D.if had I seen