A.matter
B.difficulty
C.problem
D.strain

A.
B.
C.
D.

A.
B.
C.
D.

A.connected
B.exposed
C.contributed
D.addicted

A.struggle
B.eager
C.compensate
D.call

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

A.catch
B.throw
C.cast
D.toss

A.contact
B.see
C.have
D.keep

A.do
B.make
C.lead
D.take

A.backed
B.stored
C.saved
D.copied