Iftheoperation________carefullyprepared,itwouldnothavebeensuccessful.
A、wasnot
B、hasnotbeen
C、hadnotbeen
D、werenot
Heblamedhispoorperformance_____jetlag.
A、to
B、for
C、on
D、at
Itisdifficultto________theimplicationbetweenthelines.
A、getto
B、getwith
C、getat
D、getdown
Wateriscomposed_______hydrogenandoxygen.
A、of
B、with
C、for
D、about
Theyareeager_______abroad.
A、travel
B、travelled
C、totravel
D、travelling