His friends were ___________and encouraged him to publish his ideas, but Copernicus was cautious.
| A．technical | B．official |
| C．educated | D．enthusiastic |
___some people regard as a drawback is seen as a plus by many others
| A．Whether |
| B．What |
| C．That |
| D．How |
Though___to seeus,the professor gave us a warm welcome
| A．surprising |
| B．was surprised |
| C．surprised |
| D．being surprised |
Listening to loud music at rock concerts___caused hearing loss in some teenagers
| A．is |
| B．are |
| C．has |
| D．have |
His first novel___good reviews since it came out last month
| A．receives |
| B．is receiving |
| C．will receive |
| D．has received |
It sounds like something is wrong with the car’s engine.___,we’d better take it to the garage immediately
| A．Otherwise |
| B．If not |
| C．But for that |
| D．If so |