Do you like your pet dog?-Sure. I think it’s good _____our old people.[ ]

All of us find ________ necessary to take exercise every day.

Daniel must have lost his job in that unemployment crisis, he?—I don’t think so. Yesterday I saw him working together with his colleagues.

Students like chatting their friends the Internet.[ ]

The last time I ______her, she ___________ at a medical college.