I was about to go to bed _____ one of my old classmates made a call to me.
| A．that | B．as | C．while | D．when |
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 |
A quarrel _________, which made him ______ his family.
| A．was broken out; break away |
| B．broke out; break away from |
| C．was broken away; break down |
| D．broke down; break out |