----We could have come here much earlier in your car.
----I agree. But it _____.
| A．is repaired | B．was being repaired |
| C．had been repaired | D．is being repaired |
The speed limit for bicycles on campus is 15 mph, ___________ otherwise posted.
| A．unless | B．until | C．since | D．however |
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 |