To pull through, the Press is trying to get more readers to _____ its newspapers instead of cutting down expenses.
| A．contribute to | B．tend to | C．submit to | D．subscribe to |
Nowadays, children always complain that their parents are out of date, ______ parents can’t approve of what their children say and do.
| A．while | B．thus | C．therefore | D．otherwise |
We know a good deal about the people who lived in China 4, 000 years ago, because they ______write and leave written records for those who lived after them.
| A．could | B．should | C．must | D．shall |
Trees are useful to man mainly in three ways, the most important of which is that they can protect ______ from droughts (干旱) and floods.
| A．it | B．itself | C．himself | D．him |
—made Daisy wild with joy？
—Her success in the A-level exam this year.
| A．How was it that | B．When was it that |
| C．Why was it that | D．What was it that |
For environmental reasons，we as well take these waste products and have them recycled.
| A．shou1d | B．would | C．might | D．could |