Einstein’s theory, which was doubted by most scientists at first___out to be correct in the end.
| A．proved | B．was proved | C．turned | D．tested |
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 |
The suit’s finished, ___?
| A．doesn’t it | B．isn't it | C．haven't it | D．hasn't it |