The manager was concerned to hear that two of his trusted workers ______

19．China has warned America that it_____be responsible for its arms sale to Taiwan.

Riding on the swings and playing with the ducks in thepond _____ our children’s greatest pleasures when we took them to the park

Some festivals are held to honor the dead or to satisfy the ancestors, _____might return either to help or _______

your uncle take a taxi to the airportWhy didn’t you drive him there—I,but my car