—Is that Tom in the teachers' office?--No, it ________ be him. He's gone to the hospital.
--Could I speak to Miss. Zhang? --Wait a moment. She ___________ in the meeting-room.
--Have you seen Mr. Black? I have something important to tell him. --Don’t worry. Let me ____________his phone number in my telephone book.
My father likes smoking. He often says that giving up smoking is the easiest thing in the word. I know because I________ it thousands of times.
--What are you going to do tonight, Cindy? --I’m not sure. I __________go to see a movie with my friends.
__________ it’s very difficult, remember not to give up until the last minute.