To keep healthy, Professor Johnson ____ cycling as a regular form of exercise after he retired.
| A．made up | B．put up | C．took up | D．carried out |
In manufacturing, cheaper materials are constantly being for the better, more expensive kind.
| A．maintained | B．cancelled |
| C．substituted | D．deposited |
I have no idea of what is in fashion nowadays, so my choice might be quite ____.
| A．abundant | B．arbitrary |
| C．considerate | D．aggressive |
Every time Gina catches her employees ____________ time, she reminds them that time is money.
| A．to waste | B．wasting |
| C．wasted | D．waste |
The teacher left word with our monitor ___________ she would explain the problem again next time.
| A．who | B．which |
| C．as | D．that |
He hesitated for a moment before kicking the ball; otherwise, he ___________ a goal.
| A．would score | B．scored |
| C．would have scored | D．had scored |