A、sounding
B、ringing
C、ticking
D、humming

A、Iwonderwhat’sbehindthischangeofplan
B、Jimturnedtospeaktothepersonstandingbehindhim
C、ThisworkshouldhavebeenfinishedyesterdayI’mgettingterriblybehind
D、IsupposeI’mluckybecausemyparentswerebehindmealltheway

A、being
B、wouldbe
C、be
D、tobe

A、totake
B、take
C、taking
D、tobetaking

A、werenot,wouldnotput
B、were,wouldpu
C、hadbeen,wouldhaveput
D、hadnotbeen,wouldnothaveput