Ifoundthehomeworkwasmuchmore_____iusedtohave.
应该填thanwhat,但不明白为什么不填thanthat?
Heisnotinterestedinthosetexts,_____aretoodifficulttohim.
应该填mostofwhich,为什么不填mostofthem或mostofthat?
Thebirdwasluckytomiss____.
为什么应该填beingshot?
还有两题
Beijing,_____the2008OlympicGames,callsonallitscitizenstolearnEnglish.
应该填perparingforhosting,为什么不填areperparingforhosting?
withonlinecourseLynnhasover300studentsalloverChina______herclassthroughtheInternet.
空格填attending,