I like the music that I can sing ______.

I think he lives _____ No.386 West St. — Are you sure _____ that? You’d better make sure. [ ]

There is a pen on the ground. Is it Li Long’s?—It Li Long’s. He went to Beijing many days ago.

Did you have ________ nice holiday?—Yes, it was _______ best holiday I’ve ever had.

Before I talked with ______ scientist, I had never met_____ clever person like him.