—Hi, Tracy, you look tired.
—I'm tired. I __________ the living room all day.
| A．painted |
| B．had painted |
| C．have been painting |
| D．have painted |
Ryan’s family____ very large and his family____all fond of going hiking.
| A．is; are | B．are; is | C．is; is | D．are; are |
Compared with 2 million tons last year, our coal output has increased _____
three times; that is to say, our coal output has increased_____8 million tons
this year.
| A．to; to | B．to; by | C．by; by | D．by; to |
At that time the US was at_____war with Iraq, and Shirley worked as_____doctor in the army.
| A．a; a | B．the; a | C．/; a | D．the; / |
If we go on using energy so wastefully, __________ are that our oil wells will be dried up before new energy sources can be found to replace oil.
| A．chances | B．opportunities | C．questions | D．problems |
Sometimes the expert ________ a task from a historical point of view.
| A．doesn’t need to approach | B．dare settle | C．needs not to solve | D．dare not to deal with |