英语翻译请翻译这句话：有很多老人在那里做运动.他们看起来很健壮.

there are many old playing,they look very strong

Many old people exercise there.They look very strong.

Many old people take exercise there.They look very strong

There are many old people doing exercise, and they look strong.

A lot of old people who look very strong are doing exercise over there.

there are many old man doing exercise ,who look very strong.

There is a lot of old people doing exercise there,they look very strong.