-- What is the function of the mouse?-- It________ the cursor(光标) on the screen.
-______ he______ at this school last term? -Yes, I think so.
Timmy goes to school __________ every day . It’s 5 minutes’ walk from his home to school .
-Why not go to see the dolphin show with me? -Because I _______ it.
-Have you written anything on Chinese traditional food so far? -__________, but I have a plan for it.
-Excuse me, does Mr Smith’s son live here? -He _________ be here, but he has moved.