Hedrovefastandarrivedanhour_____ofschedule.
A、inadvance
B、ahead
C、abreast
D、infront
重写句子：Weslippedontheroadwhenwecouldseenolightsintheheavyrainthatnight.(periodicsentence)
Theprofessoraskedaquestion,andDavid________agoodanswer.
A、putupwith
B、stoodupfor
C、cameupwith
D、lookeddownupon
Americanseat______vegetablesperpersontodayastheydidin1910.
A、morethantwicemany
B、astwiceasmany
C、asmanyastwice
D、twiceasmany
When_______,waterwillbeturnedintosteam.
A、heated
B、heating
C、beingheat
D、havingheated