30. In some countries, treatments for A(H1N1) flu were neither ________ nor effective, and many patients died because of infection.
| A．critical | B．scientific | C．necessary | D．Special |
This couple have strange habits. He’d like to sleep with the lamp _____ at night and his wife with the window _____.
| A．burning; wide open | B．burnt; widely open |
| C．burnt; wide open | D．burning; widely open |
I never forget the day _____ we worked together and the day ____ we spent together.
A when, which B which, when C what, that D on which; when
------ What do you think of the English dictionary?
------Not bad. You can’t find ______ in the bookstore.
| A．a good one | B．the good one | C．a better one | D．the best one |
It was a time_______ the killer whales helped the whalers catch the baleen whales.
| A．when | B．that | C．then | D．which |
Ladies and gentlemen, please remain ______ until the plane has come to a complete stop.
| A．seated | B．seating | C．to seat | D．seat |