On Sundays there were a lot of children playing in the park, and _______ parents were seated together joking.
Nowadays, within a short walk along a busy street, you are _________ to find a chain store _________ — a fast-food restaurant, a bakery, or a supermarket.
—Why was Professor Zhang unhappy recently? —Because the theory he insisted on _________ wrong.
So _____ that all the living things died out gradually .
—Where _____Chongqing do you decide to build the factory ? —Nobody ____our manager knows .
At last the two companies ____an agreement and began to trade with each other .