_______ great fun it is to fly in a balloon!
-Remember this,children.___careful you are,____mistakes you will make.--We know Mr.Li.
He had to go home ___poor health.
—Mr Wang ,there are so many new words in this conversation.Can you help me? --Oh,don’t worry.You can __ _in the dictionary.
--_____do you tell him about the event?--By ____ e-mails.
—I’m Tom. Nice to meet you! —________