Working hard is not a only of great success, but it is among the essential requirements.
| A．sign |
| B．signal |
| C．guarantee |
| D．supposition |
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 |
—I'm not finished with my dinner yet.
—But our friends ________ for us.(2010·北京)
| A．will wait | B．wait |
| C．have waited | D．are waiting |