Students who graduate with working experience will be given _____ over those who never work in any company.
| A．production | B．preference |
| C．presence | D．preparation |
If this product does not give you complete satisfaction, please return it to the manufacturer, stating when it ________.
| A．is purchased | B．will be purchased |
| C．purchases | D．has purchased |
—David, are you listening to me?
—Sorry, Dad. I ________ to make sense of what the reporter said.
| A．was trying | B．have tried |
| C．am trying | D．tried |
—Look! Someone ________ the floor.
—Well, it wasn't me. I went shopping just now.
| A．had swept | B．has swept |
| C．was sweeping | D．is sweeping |
It's said that they ________ a better life ever since they moved to the US.
| A．had enjoyed | B．have been enjoying |
| C．were enjoying | D．would enjoy |
—Ouch! You hurt me.
—I'm sorry. But I ________ any harm. I ________ to drive a rat out.
| A．don't mean; am trying |
| B．didn't mean; tried |
| C．haven't meant; tried |
| D．didn't mean; was trying |