单项填空21
Nowadays,___________mostparentsinChinaareconcernedaboutisprovidingthebestpossibleeducationfortheirchildren
whereB
whichD
Everyoneintheofficemustattendthemeetingtomorrow
Thereareno______allowed
exceptionsB
additionsC
divisionsD
measures23
Asascientist,hehas______himselftohisresearchwithgreatenergyandpassion
appointedB
adjustedC
allocatedD
applied24
Lifeisastruggletomaketherightchoicesandtoachieveliberationfromdependence,_________material______psychological
neither;norB
either;orC
whether;orD
not;but25
—HaveyouheardfromMarysincesheleftforCanadalastyear
She______alettertomerecently
writesB
wroteC
haswrittenD
hadwritten26
Scientificresearchersareawarethattherearemanyproblems______theyhaven’tfoundanswers
forwhomB
towhomC
forwhichD
towhich27
—Listen
Theyoungco