---Many species are now in danger of dying out.
----True.Measures should be______to protect them right now.
| A．taken | B．made | C．acted | D．carried |
______ your plans look good, you still need to do some revision work on it.
| A．If | B．Once | C．Although | D．Since |
The prices of houses ______ because the demand of them become more and more great.
| A．are rising | B．rise | C．had risen | D．have been risen |
Compared with the nervousness of driving in the rain or snow, it is ______ to sit in a train without any worry of bad weather.
| A．more tired | B．less tiring | C．less tired | D．even more tiring |
It is dangerous to play with the knife. You ______ hurt yourself.
| A．can | B．may | C．must | D．should |
I bought three DVD copies of the film Avatar and now _ is left. Somebody just borrows something and never returns.
| A．none | B．nothing | C．either | D．neither |