17.—What ________（do）he do?
—He ________（be）a teacher.
18.I ________（wait）for Bob now.
19.Look at the picture. This ________（be）a picture of my family. My father is ________（sit）at the desk. He is ________（work）。 My mother is ________（stand）near a chair. She is ________（read）a book. My grandma is ________（watch）TV. I am ________（do）my homework. My sister is ________（play）。 What is the cat ________（do）？ She is ________（sleep）。
答案