ProfessorJohnsonissaid_____somesignificantadvanceinhisresearchinthepastyears.
A、havingmade
B、making
C、tohavemade
D、tomake
Itisimperativethatstudents_____theirtermpapersontime.
A、handin
B、wouldhandin
C、havetohandin
D、handedin
Evenasagirl,_____tobeherlife,andtheateraudiencesweretobeherteachers.
A、performingbyMelissawere
B、itwasknownthatMelissa'sperformanceswere
C、knowingthatMelissa'sperformanceswere
D、Melissaknewthatperformingwas
Thisisthemilitary____.Nobodyisallowedtogetinwithoutpermission.
A、bond
B、zone
C、butter
D、zoo
_____yourtimelyadvice,Iwouldneverhaveknownhowtogoaboutthework.
A、Unless
B、Butfor
C、Exceptfor
D、Notfor