______ April 22nd,people around the world celebrate Earth Day in different ways.( )
A.InB.AtC.On
The woman ___is talking with my mother is our class teacher.( )
A.whichB.whoC.whose
The school sports meeting will be ___because of the heavy rain.( )
A.put upB.put onC.put off
David never fights with his classmate,____?( )
A.does heB.doesn't heC.isn't he
The new railway ___in our hometown in 2013.( )
A.was builtB.is builtC.has built
What are you doing now?
I ___to the music.( )
A.is listeningB.am listening
C.Was listening