I always regret not harder when I was young .
— What's the matter with the man hanging his head there?— Well, if you _____ know, he was caught stealing my bike.
— Lisa hasn't lived here for long. She _____ know many people.
— There's someone outside. Who it be ?— It must be Mary. She promised to come over at 8: 00.
Recently quite a lot of experts _____ that another law on wildlife protection ____ as soon as possible.
— Why! I _____ get you on the phone. — We ______ basketball on the playground when you phoned.