（）much of their land is poor and only twelve percent of the land can be cultivated, over eighty percent of the population are agricultural workers.

单项选择题The speaker,（）for his eloquent speeches, was warmly received by the audience.

A．having known
B．being known
C．knowing
D．known

单项选择题The poor driver was still（）when passers-by pulled him out from under his car.

A．live
B．lively
C．alive
D．living