He________sleep，although he tried to，when he got on such a hunt for an idea until he had caught it. (2013·湖南，32)
| A．wouldn’t | B．shouldn’t |
| C．couldn’t | D．mustn’t |
To save some of the human languages before they are forgotten, the students in our school started a discussion “Save Our ________”
| A．Sky | B．Life | C．Arts | D．Voices |
In a time of social reform, people’s state of mind tends to keep _______ with the rapid changes of society.
| A．terms | B．pace | C．progress | D．touch |
Mr. Barren doesn’t think that all bad language should be allowed. In his opinion, there are ___________ that should be kept up.
| A．degrees | B．levels | C．limits | D．standards |
In a time of social reform, people’s state of mind tends to keep _______ with the rapid changes of society.
| A．terms | B．pace | C．progress | D．touch |
Swimming is ___ in summer.
| A．a great fun | B．great fun | C．great funs | D．great a fun |