We had to ____our discussion because one of us suddenly got ill.
---The girl is practicing English, ___________?---Yes, she is. She is good at English.
---___________ tall building it is! ---It has over one hundred floors.
Look at the picture. We are supposed to____________.
More and more people have a low-C life and the air is _________ than before.
---You have to drink more hot water _________ you have a cold---Thanks, I will.