完成下列句子。
1．大清早许多老年人在公园里慢跑。
Many old people_______ _______ in the park in the early morning.
2．自从我上次见到他以来，他又长胖了。
He has_______ _______ _______ since I last saw him.
3．我认为打高尔夫球是一项无聊的运动，不是吗？
I think playing golf is a_______ sport, _______?
4．他们正在谈论一场有趣的比赛。
They are_______ _______an_______ game.
5．他们俩喜欢什么共同的运动？
What_______ do______ them like?
