According to _______announcement by Guangzhou Price Bureau, _______new measures which have been taken recently are expected to cut the operation costs of each taxi driver by 1280 yuan.
| A．the; / | B．an; the | C．/; the | D．an; / |
—When did the computer crash?
—This morning，while I ________ the reading materials downloaded from some websites.(2012·福建)
| A．have sorted | B．was sorting |
| C．am sorting | D．had sorted |
After school we went to the readingroom to do some reading，only to be told that it ________.(2012·安徽)
| A．was decorated | B．had decorated |
| C．had been decorating | D．was being decorated |
—Joan，what ________ in your hand?
—Look！It's a birthday gift for my grandma.
| A．had you held | B．are you holding |
| C．do you hold | D．will you hold |
I'll go to the library as soon as I finish what I ________.
| A．was doing | B．am doing |
| C．have done | D．had been doing |
“The moment ________ soon”，he thought to himself，waiting nervously.(2012·湖南)
| A．came | B．has come |
| C．was coming | D．is coming |