1 . In recent years, we’ve seen too many animals ________ to satisfy the needs of human.

A．killed

B．killing

C．be killed

D．kill

2 . The bird flu ________through Asia has jumped from birds to humans at least 20 times so far, ________16 persons.

A．sweeps; killed

B．swept; killing

C．sweeping; to kill

D．sweeping; killing

3 . On Apr.1st, 31 people _________ in the fire in Liangshan. We will remember all these heroes.

A．kill

B．killed

C．are killed

D．were killed