Have you seen Dr. Adams recently?—No. He __________ Hong Kong for an important meeting. He’ll come back tomorrow.

This book isn’t mine. ________can it be?

Listen! Tom is singing in the next room.–It _______ be Tom. He has gone to Shanghai.

Is this the shop _____ sells children’s clothing?

Can I talk to you for a minute? —Sure. I have ______ time.