A.front
B.above
C.over
D.ahead

A.face
B.deal
C.encounter
D.challenge

A.refusal
B.question
C.challenge
D.obstacle

A.influencing
B.determining
C.controlling
D.pointing

A.as difficult as
B.so difficult as
C.more and more difficult
D.most difficult

A.I'm doing
B.I do
C.I did
D.I have been doing

A.it was
B.it will be
C.it's
D.it would be

A.think
B.are thinking
C.are thought
D.have thought

A.in/ with/ of/ in
B.in/ in/ of/ with
C.with/ in/ of/ in
D.of/ with/ in/ in

A.well suited
B.better suited
C.more well suited
D.best suited