A.addition
B.form
C.boost
D.encouragement

A.field
B.mood
C.wall
D.go

A.solutions
B.charge
C.measures
D.steps

A.contact
B.relation
C.touch
D.details

A.dying
B.die
C.death
D.dead

A.absence
B.duty
C.want
D.need

A.a high-rate
B.a high proportion
C.a high tendency
D.a great level

A.hurry
B.jump
C.rush
D.run

A.bring
B.make
C.give
D.do

A.being
B.at risk
C.in danger of
D.endangered