Mom, these are my friend Peter and __ brother Bill.–Welcome to our home. Come in, please.

It is well known to all that water, ______ enough, can change into ice quickly．

There is smoke in the room.

Why are you worried? — I’m expecting a call from my daughter. She _______ abroad for three days.

Li Ming was born _____ May 11, 1989 _____ Guangzhou. [ ]