We have brought in a good grain harvest for three years_________.
| A．on purpose | B．on end | C．on duty | D．on watch |
—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 |
It's really time I went home but I'm enjoying myself, so I ________ here a bit longer.
| A．am staying | B．have stayed |
| C．stayed | D．stay |