Can I get you a cake?
______,but I have already got one.( )
A.No you can't
B.Here you are
C.You're welcome
D.That's very nice of you
New energy cars have been ______ to cut down air pollution.( )
discovered
found
invented
refused
He tried many ways to solve the problem.But ______ of them worked.( )
neither
none
all
both
We are going to have a party ______ the evening of June 30th.( )
on
in
at
for
I'm sorry I took your card by mistake,but where is ______?( )
hers
theirs
yours
mine
Though Bill is very young,he has a lot of ______ about Chinese history.( )
information
knowledge
background
experience