Is Handan ______ modern city or ______ ancient one?

____ hands and knees Helen Thayer got the tent up.

Look! The light is still on. Is Mr Wu working in his office？—No, it _____ be Mr Wu. He has gone to Nanjing for a meeting.

Will you show me the photo of your family? —OK, I’ll __ it here tomorrow.

He __________ be at home now because I saw him in the office just now.