After discussing, the students ________ some good ideas to work on the project.
---Could we buy a piano, Jack? ---I’m afraid there ______ enough room for one in the house.
--Could you please _____ in the room? --Oh, I’m sorry.
_____ have you been swimming? For five years.
It’s really cold today, ______ ?
---He’s never been to an aquarium.---_______.