___ is left over may be put into the refrigerator, ____ it will keep for two or three weeks.
| A．Whoever; when | B．Whenever; which |
| C．Whatever; where | D．Whichever; while |
How beautifully she sings! I have never heard _____ voice.
| A．a better |
| B．a best |
| C．the better |
| D．the best |
he young man ________ a suggestion at the meeting.
| A．come about |
| B．come into |
| C．come up with |
| D．come out with |
The____of the Itaipu Dam took 30 000 people seven years.
| A．construction |
| B．structure |
| C．destruction |
| D．instruction |
Being a teacher，she dreamed____turning a deaf-blind creature into a useful human being.
| A．at |
| B．of |
| C．on |
| D．from |
Nancy was always speaking highly of her role in the play，____，of course，made the others unhappy.
| A．who |
| B．which |
| C．this |
| D．what |