Look! This is ______ “U ” and that is _____ “S”.
I feel ___ hot because I’ve drunk _____beer.
When H7N9 bird flu first appeared,people didn’t know _____ doctors could cure it.
------Do you mind me sit here?------_________,it’s for Mr Brown.
I was born ___ the evening ___ March 12,1997.
Have you seen ______ pen? I left it here this morning.Is it ____ black one? I think I saw it somewhere.