A.decide
B.combine
C.explain
D.happen

A.electricity
B.electrify
C.electric
D.electrically

A.electricity
B.electrify
C.electric
D.electrically

A.initiated
B.was initiating
C.initiate
D.were initiated

A.matters
B.issues
C.questions
D.problems

A.Because
B.Although
C.Because of
D.In spite of

A.speaking
B.saying
C.telling
D.talking

A.walk
B.am walking
C.was walking
D.walked

A.at
B.in
C.of
D.on

A.The better
B.The best
C.Better
D.Best