From the cheers and shouts of _____, I gathered that he was winning the race.
| A．stimulus | B．urgency | C．encouragement | D．promotion |
More than one company ___ the new design to market only to see it quickly denied by those who couldn’t wear them.
| A．has taken | B．has been taken | C．have taken | D．have been taken |
During our stay in London, the guide book ___ a great help. We all had a wonderful time.
A. behaved B conducted C. served D. proved
Her behavior is __________.
| A．worthy praise | B．worthy to be praised |
| C．worth to be praised | D．worth being praised |
—The room is so dirty, _____ we clean it?
—Of course.
| A．will | B．shall | C．would | D．do |
There are many kinds of birds in Australia, and over 140 species of snakes, ______are extremely dangerous.
| A．many of those | B．many of that | C．many of which | D．many of what |