. —Have you thought of a topic for your speech yet?
—No, I______a lot about it, but I haven’t decided.
| A．will think | B．have been thinking | C．had thought | D．was thinking |
Many new _____ will be opened up in the future for those with a university education.
| A．opportunities | B．realities | C．necessities | D．probabilities |
It isn't quite _____ that he will be present at the meeting.
| A．sure | B．right | C．exact | D．certain |
The island where these rare birds nest has been declared a _____.
| A．observation | B．reservation | C．preservation | D．conservation |
Kate's ambition to become a nurse _____ from a desire to help others.
| A．prompted | B．promoted | C．programmed | D．proceeded |
Dress warmly, _____ you'll catch cold.
| A．on the contrary | B．or rather | C．or else | D．in no way |