11.______ their studies in China, they’ve travelled to some cities and talked with the local people.
On Sundays there were a lot of children playing in the park, _______ parents were sitting together joking.
On Sundays there were a lot of children playing in the park, _______ parents sat together joking.
On Sundays there were a lot of children playing in the park, _______ parents sitting together joking.
On Sundays there were a lot of children playing in the park, and _______ parents were seated together joking.
On Sundays there were a lot of children playing in the park, _______ parents were seated together joking.