---Are Mr. and Mrs. Wang living alone in the house? ---Yes, they have three sons, but ______ of them live in their own houses.

Are these books ____.— No. they are not mine. They belong to ______.

The doctors said that there was ___ wrong with Jane’s legs, but they could do ___ to help her.

 Is this the shop _____ sells children’s clothing?

– What’s your English teacher’s name?-- ________ name is John Smith.