A.tell
B.to tell
C.telling
D.to telling

A.were questioned
B.who questioned
C.who were questioned
D.question

A.expand
B.which expand
C.which expanding
D.to expand

A.questioning
B.questioned
C.question
D.to question

A.lead
B.led
C.leading
D.to lead

A.over-road
B.on-road
C.away-road
D.off-road

A.essential
B.necessary
C.dominant
D.great

A.to
B.on
C.into
D.for

A.net
B.website
C.internet
D.network

A.in
B.on
C.in to
D.off to

A.passion
B.feeling
C.sense
D.feelings