单项选择题
A.am terrifying B.terrify C.am terrified D.terrified
A.up B.down C.about D.off
A.away B.over C.out D.up
A.an irritated B.an irritating C.irritating D.irritated
A.searching B.researching C.surveying D.investigating
A.hours frustrating B.hours frustrated C.hours’ frustrating D.hours’f rustrated
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