—Susan stays alone in the classroom and looks sad.—_____________to her?A What happens B What has happened C What is happening D What was happening
If a bear is ___________, it __________ people.
Boys and girls, did you enjoy ___________ in the park yesterday?
Tom is only four years old, __________ he can draw beautiful pictures.
- Is your father in?- No, he ______ for three hours.
—Miss Gao has ____________ free time than Mr Green. —I think so. She is busy every day.