____， is this your pencil —-Yes， thank you.

How wonderfully Huang Bo performed at the 2014 Spring Festival Gala! –Yes, It _________ my memories of his films.

There is _______"u" and______"s" in the word "use"

The boy is , so he pass the exam easily.

Should I go to the University of Iowa or Iowa State University—Think it over for a few days. You _____ make up your mind right now. There’s no hurry.