单项选择题
A.to shout B.shouting C.to speak D.speaking
He is looking forward（）his thesis.A.to writeB.to writin...
单项选择题He is looking forward（）his thesis.
A.to write B.to writing C.in writing D.on writing
Jack enjoys（）Peking Opera.A.listen toB.listeningC.liste...
单项选择题Jack enjoys（）Peking Opera.
A.listen to B.listening C.listen D.listening to
It's not safe（）in the street.A.playedB.playC.playingD.p...
单项选择题It's not safe（）in the street.
A.played B.play C.playing D.plays
