A.equipment
B.devices
C.aids
D.contribution

A.Although
B.As
C.Therefore
D.When

A.formed - defined
B.formed – explained
C.shaped – explained
D.shaped - defined

A.talks
B.adds
C.mentions
D.refers

A.talks
B.adds
C.mentions
D.refers

A.return
B.repair
C.resurrect
D.response

A.hacker
B.automated
C.application
D.navigate

A.exterminate
B.extend
C.expand
D.example

A.interfere
B.incredible
C.intervention
D.ending

A.navigation
B.activate
C.faraway
D.malfunction