Mike,who helped make the paper plane?
Nobody! I made it all by myself.( )
A.yourB.yoursC.youD.yourself
Must he sing the song in English?
No,he____.( )
needn't
can't
mustn't
____fine weather we have today!( )
What a
How
What
I wish you a happy National Day!
_____.( )
The same as you
Thank you
The same to you
It's already tens of years____the world's population reached five billion.( )
before
after
since
We must remember____.( )
what our teacher said
what did our teacher say
what has our teacher said