22．While building a tunnel through the mountain, ________ .
| A．an underground lake was discovered | B．there was an underground lake discovered |
| C．a lake was discovered underground | D．the workers discovered an underground lake |
—Peter, have you _____your decayed tooth?
—Yeah, but it’s terrible . I had _____most unpleasant time at the dentist’s.
| A．pulled out; a | B．cut out; the | C．pulled out; the | D．break out; a |
She must have arrived there yesterday,_____?
| A．mustn’t she | B．needn’t she | C．hasn’t she | D．didn’t she |
We climbed to the top of Dayan Pagoda at night , believe it or not, ______ we could see a Buddha image in the sky.
| A．from there | B．where | C．from where | D．there |
The Chinese agricultural tax wasn’t completely abolished______2006, which reduced the farmers’ burden greatly.
| A．until | B．before | C．since | D．after |
Jenny was bending over a desk, her tongue sticking out slightly, _____ in the pain of composition.
| A．having absorbed | B．absorbed |
| C．being absorbed | D．absorbing |