题目内容：

“很难的问题”用英语怎么说?
还有几道英语选择题
1.—Let's play football.
—()
A.Yes,I do B.That's a good idea
C.Sorry,I don't D.No,I don't
2.Can you () it () English
A.speak in B.say in
C.speak with D.talk with
3.Mum,do you know where my pencil case and eraser()?
A.is B.are
C.isn't D.aren't
4.my pencil case is in my backpack.I think yours ()in your
backpack,too.
A.are B.is
C.isn't D.aren't
5.Cai Yilin will give a singing performance ()TV tonight.
A.in B.in the
C.on D.on the