Congratulations! You’re chosen to be an exchange student to Britain.—

owed the visitors around the museum, the construction _____had taken more than three years.

When did he leave the classroom?—He left _____you turned back to write on the blackboard

This girl is ready to help peopleany time. When she is on the bus, she always herseat to someone in need.

I don’t want any reward for my help; I gave it out of friendship[ ]