A.off
B.up
C.for
D.in

A.needs towash
B.needs wash
C.needs washing
D.needs being washed

A.back
B.blank
C.empty
D.nothing

A.install
B.installed
C.installing
D.to install

A.got used to going
B.used to going
C.got usedto go
D.used going

A.teeth
B.tooth
C.teethe
D.teething

A.first
B.starting
C.beginning
D.initial

A.error
B.an error
C.wrong
D.mistaken

A.all the datum
B.the all data
C.all the data
D.the all datum

A.boot it up
B.boot up it
C.boot up
D.boot

A.an intelligence
B.an talent
C.a creativity
D.a mind