After long a nd hard work, the police at last discovered the ________ of the baby found by the side of a road.
| A．attitude | B．identity |
| C．situation | D．concern |
________needs further discussion whether we’ll build a library or not.
| A．We | B．He | C．It | D．The thing |
He felt ______ to work for human rights and progress.
| A．it his duty | B．his duty | C．that is a duty | D．that is his duty |
______ will take you a lot of time to find him in the crowd.
| A．It | B．I | C．We | D．They |
_______ surprised me most was that she had become a famous singer.
| A．That | B．It | C．What | D．This |
_______ to say which one I should choose.
| A．That’s hard | B．It is hard | C．There no use | D．It no good |