---The students of Class 7 are going to the seaside this weekend.---Remember _____ them not to keep _______ alone in the sea. It’s dangerous.
We got mad ______ the team for losing the match.
I got home _____ they were having dinner.
---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.