This house is big enough us to live in. [ ]

It is about ten years _____ I met you last. [ ]

Were you at home at 9:00 pm yesterday?— Yes, I for a call from Paris at that time.

Mr. Li, let’s go fishing this weekend with Lao Wang, shall we?—I’d love to, but nobody knows if he _______ free then.

Wow! What a lovely e-dog! Is it yours?—Yes, it’s ______. My father bought it for me yesterday.