New medicines and instruments ______ every day to extend life.
| A．develop | B．are being developed |
| C．are developing | D．have developed |
– Will it rain tomorrow?
-- No. I don’t doubt ________.
| A．whether it will rain | B．that it will rain | C．whether it rains | D．that it rains |
They ___ the game.
| A．are disappointed at losing | B．disappoint |
| C．are disappointing | D．are disappointed |
_____ in all parts of the state, pines are the most common trees in Georgia .
| A．Found | B．Finding them | C．To find them | D．They are found |
---____ the paper ?
--- No, I have still got one page to finish.
| A．Have you done | B．Do you do | C．Did you do | D．Had you done |
---What are you busy with ?
--- We are carrying out a research ____ the causes of cancer.
| A．into | B．onto | C．to | D．in |