85. You should say "I am sorry " when you knock ________ somebody.
| A．at | B．in | C．to | D．into |
After the meeting, she invited us to dinner at her home and treated us _____ many exotic foods we _____ before. It was really a wonderful treat.
| A．with; had never tasted | B．to; have never tasted |
| C．with; have never tasted | D．to; had never tasted |
Farmers in China began to use tractors ___ cattle for farming work.
| A．to take the place of | B．take place of |
| C．to in place of | D．in the place of |
Mr. Wang ____ two boys to send the sick boy to the nearest hospital
| A．arranged | B．has arranged |
| C．had arranged for | D．has arranged for |
—Are you a volunteer now?
—No, but I _____. I worked for the City Sports Meeting last year.
| A．used to | B．used to be | C．used to do | D．was used to |
The girl looked at me with a _______expression. Maybe the problem was quite ______.
| A．puzzled; puzzling | B．puzzling; puzzled |
| C．puzzled; puzzled | D．puzzling; puzzling |