Ex. 3. Fill in prepositions to complete the sentences.
1. Your jokes are wasted ___ him.
2. The ancient palace was all ___ flames.
3. The little girl was absorbed ___ the book she was reading and didn’t notice me.
4. ___ that point the man was interrupted. He didn’t quite enjoy it.
5. In his speech Mr. Woodriff pointed ___ several drawbacks of the plan.
6. We could watch ducks floating ___ the water.
7. A piece of wood was floating ___ the stream.