(13)
A.through
B.about
C.on
D.by

(14)
A.Until
B.When
C.Provide
D.As

(16)
A.Progression
B.Successes
C.Increases
D.Advances

A.carry
B.start
C.smart
D.card

(21)
A.tried
B.sought
C.asked
D.gone

(23)
A.when
B.who
C.that
D.which

(24)
A.remain
B.continue
C.persist
D.endure

(27)
A.which
B.whom
C.who
D.what

(28)
A.Moreover
B.However
C.Therefore
D.So that

(30)
A.time
B.warning
C.term
D.notice