Aborigines' most common tool in Australia is ________ boomerang, which is used to kill ________ animals.
| A．the;/ | B．/;/ | C．the; the | D．/;the |
People wrote letters to get in touch in the past. Nowadays email has the way people communicate.
| A．directed | B．conveyed | C．transformed | D．sponsored |
In recent years, China and the USA have had a lot of ___________of views about the same problem.
| A．replacements | B．transformations | C．changes | D．exchanges |
They are not familiar with the project, so I don’t think amounts to（意味着） much.
| A．what did they say | B．what have they said | C．whatever have they said | D．whatever they say |
Nancy was very disappointed to hear the news. I wish I her about that.
| A．hadn’t told | B．didn’t tell | C．wouldn’t tell | D．can’t tell |
I stood there wanting to ask more questions but found that was not the time.
| A．appropriate | B．typical | C．accurate | D．effective |