-----Would you like to go and buy some food with us? ---- ____, but I’m busy.
If you eat ________meat, you’ll be heavier.
--- How does Jack usually go to work? --- He _______ drive a car, but now he ________ there to lose weight(减肥).
---What's ________ wrong with you? --- I have ______ sore throat.
--Why is she at Xiao Ying’s home? --_________ they are friends.
We are ________ a school trip..