The oil must be used up, the light went out.
| A．for | B．because | C．since | D．as |
Wherever such an area is located, it will be immediately ______ by the enemy if armed forces are lacking.
| A．taken | B．caught | C．occupied | D．kept |
While typing, Helen has a habit of stopping ______ to give her long and flowing hair a smooth.
A now and then B.over and over C.up and down D.here and there
---I bet you will go on a trip after graduation.
---______. I can’t wait!
| A．Surely I will | B．Go ahead | C．Take it easy | D．My pleasure |
Cole Bettles ______ by a number of universities when he received an e-mail from the University of California last month.
| A．had been rejected | B．has been rejected | C．has rejected | D．was rejecting |
Rare species in the world, ______ by hundreds every year, must be jointly preserved by all countries, or humans will encounter ecological disaster in the near future.