Allow children the space to voice their opinions____ they are different from your own.
| A．until | B．as though | C．unless | D．even if |
The people who objected to cloning human beings went on strike and _________ the traffic.
| A．cut through | B．faded out | C．held on | D．held up |
Only after he realized the significance of mastering two languages __________ English carefully.
| A．did he set about learning | B．did he set out learning |
| C．had he set about learning | D．had he set out learning |
_________ with common sense can tell the difference between the two.
| A．Whoever | B．No matter who | C．Anyone | D．Who |
_________ that the government can lead them out of the financial crisis, people are optimistic
about the future of the country.
| A．Convincing | B．Convinced | C．To convince | D．Having convinced |
Recently a survey _______ prices of the same goods in two different supermarkets has caused a heated discussion among citizens.
| A．comparing | B．compared | C．compares | D．being compared |