ProfessorJohnsonissaid_____somesignificantadvanceinhisresearchinthepastyears.
A、havingmade
B、making
C、tohavemade
D、tomake
Sometimesabus____getsonthebustocheckthetickets.
A、agent
B、officer
C、conductor
D、inspector
A、married
B、bemarried
C、gotmarried
D、beenmarried
There_____nothingmorefordiscussion,themeetingcametoanendhalfanearlier.
A、tobe
B、tohavebeen
C、being
D、be
Thecompositionscontainedsofewerrorsthattheteachergotthestudents_____oneanother’spapers.
A、correct
B、tocorrect
C、correcting
D、tobecorrecting