----When did you visit the zoo? ----_____________.
-_____ is it from the village to your farm?- About 10 minutes’ walk.
–I think students should have mobile phones to call their parents.- _____. They often use them to play games instead.
–What did the radio say just now?- Sorry. I didn’t catch it. I _____ something else.
– Mum, do you know if Dad _____ a model plane for me?- I think he will do if he _____ free.
Last month, doctors used a 3-D printer to rebuild the face of a person ____ had a bad accident.