which of the following

which of the following
which of the following
sentences is wrong?
A.put them away ,please.
B.thousands of people died in tne earthquake.
C.lt is easy .you can work out it.
D.you can take a bus to go there.
when they see a sea bird ( )high out to the sea,they say it will be a nice day.
A.fly B.flies C.to fly D.is flying