. The boys enters the classroom, smiling and______, and_______down to have their lessons
| A．talk; sat | B．talking; sitting | C．talking; sat | D．talked; sitting |
Theory is ______ in that it can provide a direction for practice.
| A．valuable | B．typical | C．religious | D．narrow |
The boy then led her into the warm hall and left her ______ by the fire.
| A．sit | B．to sit | C．sitting | D．sat |
Between the two mountains _________ the factory where my father used to work.
| A．stand | B．standing | C．to stand | D．stands |
They were lost at sea, _______ the mercy of wind and weather.
| A．on | B．at | C．in | D．by |
Then I got up slowly, looking at ______ moon, and lost in ______ thought, which made me sad.
| A．the; \ | B．\; the | C．the; the | D．\; \ |