I called the wrong number _____ accident.
A.off
B.on
C.with
D.by

Stay here till the lights ( turn ) __________ green.
A.turned
B.will turn
C.turn
D.would turn

While he ( learn ) __________ to drive he had twenty-five accidents.
A.was learning
B.has been learning
C.learned
D.learn

I suggest ( go ) __________ there on foot.
A.to go
B.having gone
C.going
D.went

CONVENIENT
A.convenience
B.inconvenience
C.conveniently
D.conveniences

RESEARCH
A.researching
B.reseaches
C.researchers
D.researched

DESIGN
A.designably
B.designate
C.designable
D.designed

_________(2)
A.that
B.which
C.what
D.Both A and B

_________(3)
A.As
B.When
C.While
D.All correct

_________(5)
A.into
B.onto
C.under
D.off