Sarah pretended to be cheerful, __________ nothing about the argument.
| A．says |
| B．said |
| C．to say |
| D．saying |
Joe Jones, the eldest of the eight children, had to ________ out of high school at the age of 16 to help his father on the farm.
| A．leave | B．drop | C．fall | D．go |
He missed _______ when he was in Africa.
| A．killing | B．to be killed | C．to kill | D．being killed |
In our town, wood can ___________ a fire.
| A．be used to make | B．be used to making |
| C．use to make | D．used to making |
In the past five years China ________ great _________.
| A．made, progress | B．has made, progresses |
| C．made, progresses | D．has made, progress |
They talked for about an hour of things and persons _____ they remembered in the school.
| A．which | B．that | C．who | D．whom |