Traffic conditions in Nanchang _____ for decades. At first people only complained about jams during rush hours, but today every hour is rush hour.
| A．are worsening | B．had worsened |
| C．have been worsening | D．worsened |
Jane didn't say_________she would return, but I suppose she'll be back for dinner.
| A．that when | B．when | C．if or not | D．where |
What an accident! If the driver_________ carefully, things would not be as they are.
| A．has driven | B．drove | C．had driven | D．was driving |
The price_________recently. I wonder whether it will remain so.
| A．was going up | B．went up | C．has gone up | D．has been going up |
What I said and did at your house last night_________just between you and me.
| A．is | B．are | C．have been | D．had been |
He waited with his companion_________the rescuers came, and then helped them carry her back down the mountain.
| A．when | B．until | C．unless | D．while |