. Everyone must have known the death of the waitress，________?
| A．must they | B．mustn't they | C．haven't they | D．have they |
He often helps the students _______ he thinks are not quick at their studies.
| A．whom | B．who | C．when | D．because |
The organization is badly _________ of hands.
| A．relevant | B．donated | C．in need | D．dying |
Shut the window, _________ it’ll get too cold here.
| A．so | B．yet | C．but | D．otherwise |
It looks as if they are going to _________ us 3,000 dollars for the concert hall.
| A．want | B．cost | C．demand | D．charge |
Coming into the room, I found them ________ at the table, _________ chess.
| A．seated; playing | B．seating; playing |
| C．seat; play | D．seated; played |