Do you know Xidan Girl?—Of course. She played _____ guitar and sang song in the 2010 Spring Festival Gala.

There is ________ in population that a food shortage is caused.

Scientists say it may be five or six years ____ it is possible to test this medicine on human patients.

Do you know Johnny Dean, the rock singer ________ funny glasses and long curly hair? [ ]

My friend Jack looks fine, he always ______a smile _____his face.