-How much is the pair of shoes?-Twenty dollars ____ enough.A. is B. are C. am
— Have you _______ read this story before? — Yes. I’ve _______ read it.
The new airport has been in _______ for two years and it _______ to be a quiet place.
Don’t make the old people live_______ if possible. They will feel_______.
— _______ have you lived in Wuxi? — Since I was born.
I bought _______ English-Chinese dictionary. _______ dictionary is very useful.