I didn’t see Tom last night. Where was he?--- He______ an interesting book at home.
The teacher came in. All the students stopped ______ and ______to her.
Don’t go out on the thin ice, ________ you’ll fall in the river.
We love to go to the country in spring because the flowers smell so _____.
—May I smoke here? —________, you ________. It can be dangerous.
Let the children go away. They’re making too much ________ here.