By looking at a problem in as many ways as possible, creative thinkers can find solutions that would _______ remain invisible．
| A．otherwise | B．yet | C．already | D．forever |
—Did you enjoy yourself yesterday?
—Yes. As you saw, party went on in _______ most pleasant atmosphere.
| A．the; a | B．the; the |
| C．a; the | D．a; a |
What _______ public is concerned about is whether medical workers and scientists will be able to find _______ cure for this new disease after the vaccine(疫苗) is tried on volunteers.
| A．/；/；/ | B．the；the；/ |
| C．the；/；the | D．the；a；the |
You have been sitting on my hat and now it is badly out of _______.
| A．date | B．shape |
| C．order | D．balance |
She was caught in _______ heavy rain on her way to the lonely island, which was quite _______ experience.
| A．a；/ | B．/；an |
| C．a；an | D．a；a |
It is _______ world of wonders, _______ world where anything can happen.
| A．a；the | B．a；a |
| C．the；a | D．/；/ |