The handicrafts, ________ had been made by the students, were sold out soon.
| A．most of which | B．most of what |
| C．most of them | D．most of whom |
The children went home from the grammar school, their lessons __________ for the day.
| A．finishing | B．finished |
| C．had finished | D．were finished |
. __________ by a greater demand of vegetables, farmers have built more green houses.
| A．Driven | B．Being driven |
| C．To drive | D．Having driven |
. The flowers his friend gave him will die unless __________ every day.
A. watered B. watering
B. water D. to water
. Please remain __________ until the plane has come to a complete stop.
| A．to seat | B．to be seated |
| C．seating | D．seated |
. “Things __________ never come again!” I couldn’t help talking to myself.
| A．lost | B．losing |
| C．to lost | D．have lost |