— Why do you think ______?

   — He could ______ for exercise.

A. is the man running, run      B. the man is running, be running

C. does the man run, run       D. the man runs, be running

Which pet is the best pet for you? Different pets are good for different people. People who live in the country can have almost any pet. Dogs need a lot space to run, so the country is a good place for them. The country is a good place for cats, rabbits, horses, and birds, too. People who live in the city can also have pets. Cats are happy inside apartments. Birds, fish, and lizards can live in apartments. Dogs can be very happy in apartments as long as they get lots of exercise and clean air. Dogs need to be walked every day. A runner would make a good pet owner. Then the dog could run with its owner.

Cat and dog owners must train their pets. Training takes time. Birds, fish, and lizards are better pets for people who are very busy.

Cats and dogs both need soft beds to sleep on. Birds sleep on a perch in their cages. Lizards and fish need tanks to live in. one thing all animals need is lots of love.

1. pet 宠物   2. almost 几乎    3. space 空间   4. apartment 公寓   5.owner 主人

45. Peter is busy with his work in the city every day, so he may keep the pets like ___.

   A. cats and birds      B. dogs and fish      C. horses and lizards      D. birds and lizards

46. How many kinds of animals are mentioned(提到) in the passage?

   A. Five              B. Six               C. Seven               D. Eight

47. Which sentence is true according to (根据) the passage?

   A. People in the country can have almost any pet

   B. People in the city can only have cats or dogs

   C. People who own cats can’t only have other pets

   D. All the pets need soft beds and lots of love

--Why do you think the man is running?

--He could be ________ for exercise.

[　　]