David talked with a friend of ________ on the Internet for a long time yesterday.

As students, we should work hard and do ________ best to realize our dreams. 

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

—How many computers are there in the room?—__________. Some workers moved them to another place just now.

--________ is Women’s Day？--It’s March 8th.