Professor Johnson is said _____ some significant advance in his research in the past years.
A、havingmadeC
暂无解析
Modern____perhapscausesmoreproblemsthanitsolves.
_____forthefactthatshebrokeherleg,shemighthavepassedtheexam.
Iwastohavemadeaspeechif_____.
MissGreenwas____$100fordrivingafterdrinking.
Thethreementriedmanytimestosneakacrosstheborderintotheneighboringcountry_____bythepoliceeachtime.
