I was really too busy with my homework and I couldn't help ____________ housework.
| A．doing | B．do | C．did | D．done |
He didn’t selfishly keep for himself the money inherited from his uncle. Instead, he made a ______ contribution to help the community.
| A．commercial | B．generous | C．comparable | D．profitable |
People complain that decisions to approve or deny a permit are often ______ rather than based on fixed criteria.
| A．appropriate | B．conscious | C．arbitrary | D．controversial |
The Forbidden City attracts a _____ stream of visitors every day, especially during national holidays.
| A．constant | B．main | C．powerful | D．shallow |
Those poor and needy teenagers were excited to find a shop at the corner where they could buy ____ priced bikes.
| A．competitively | B．recently | C．reasonably | D．affordably |
A society cannot be successful if it throws tradition away, but it cannot be successful ____if we do something to stop progress.
| A．either | B．neither | C．too | D．also |