To tell ______ truth, he is at ______ loss what to do currently．

Whatdoyouthinkofmyidea? —It’snotgood.Mostofusare_____you.[ ]

Listen! Is Kate playing the piano in the room? —No. It _________ be her. She has gone to London with her parents.

My brother is ____ years old．Today is his _____ birthday．

Who’s the girl in red?—Sorry, I don’t know ____. —____ is a new student.