I’m afraid that no one knows_________ .
—Susan, I have a sore throat. —You talked ______ just now. Please drink more water.
—Could I open the door? —______. It’s very cold outside.
I think these students should do ______ part in keeping the class-room clean.
When my mother ______ home, I was making some cards.
I used to ______ English in the evening. Now I’m used to ______ it in the morning.