Jim, ________ read books while you are walking in the street. It’s very dangerous.—OK, thank you.

Is Jim in the office? —No, he _______ to the dining hall.

We know Lady Gaga is well-known all over the world .

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

? — About twenty yuan. [ ]