请帮我做几道英语选择题
1.Cancellationoftheflight___manypassengerstospendthenightattheairport.
a.resultedb.obligedc.demandedd.recommended
2.thebasicfeaturesofthecommunicationprocessareidentifiedinonequestion:Whosays_____throughwhatchanneltowhom?
a.howb.whenc.whatd.such
3.Surprisingly,shedidn't____usthenewsthatsheknewfirst
a.toldb.willtellc.telld.tells
4.Despiteoftheloudnoiseoutside,thestudentswerestillcarefullylistening____theirteacher.
a.tob.inc.ofd.from
5.____difficultieswemaycomeacross,we'llhelponeanothertoovercomethem.
a.whereverb.whateverc.howeverd.whenever
6.Hestudiesveryhard_____hewantstopasstheexam.
a.butb.althoughc.sod.beacuse
7.itisreportedinthenewspaperthatMr.Presidentwill_____theschoolnextweek.
a.visitb.seec.lookatd.watch
8.Internethasbecome_____popularinourdailylife.
a.moreandmoreb.smallerandsmallerc.biggerandbigger
d.much