A.set back
B.held up
C.stood back
D.kept down
A.What; what
B.What; that
C.That; that
D.That; what
A.hand out
B.hand over
C.hand down
D.hand on
A.shouldn't follow
B.mustn't follow
C.couldn't have been following
D.shouldn't have been following
A.The fourth biggest city it was
B.Once the fourth biggest city
C.Being the fourth biggest city
D.It was once the fourth biggest city
A.Since
B.Unless
C.As
D.Although
A.that
B.who
C.from whom
D.to whom
A.or else
B.and then
C.or so
D.even so
A.were
B.is
C.are
D.hadbeen
A.research
B.rescue
C.vessel
D.vast
A.of whom
B.whom
C.of whose
D.whose
A.tragedy
B.vacuum
C.question
D.barrier