— Is this your pen? — _________. It’s his pen. A. It is my pen. B. Yes, it is C. No, it isn’t
_______ jeans were invented over 100 years ago, they're still in fashion today.
We _______ pay to get into the concert. It's free.
--Good morning, sir! _________? -- I'd like to buy a sweater for my daughter.
You have to be ______ and wait until I finish my work.
--My parents and I will go to London for a trip tomorrow. --Really? __________.