---Look at the boy running on the playground. Is it David? ---It ______ be him. I saw him go to the teachers’ office just now.
If it ________ tomorrow, we will go to the zoo. A. isn’t rain B. doesn’t rain C. won’t rain
—Would you mind ________ here?—Sorry, I’ll go ________ else. A. my smoking; somewhere B. not smoking; somewhere C. not smoking; anywhere
We should take care ________ ourselves. A. to B. for C. of
—What’s wrong with you? — It’s ________. A. nothing serious B. serious nothing C. serious something
We will stay at home instead of ________. A. walking B. to walk C. walk