The hat borrowed from the drama company was so dirty that it required ________ thoroughly.

_______ as “a class of one ”, independent learning enabled you to study at your own pace.

The boy lost his key, so he has no choice but         till his mother came home．

All the citizens strongly insist those found _____ "harmful" advertisements in the street should be punished strictly．

With masses of homework _____, I can hardly spare time to practice playing the piano．

 Please go on trying, I’m sure the efforts you are ________ will pay off.

–Who is the man talking to the headmaster? –A professor ________ a visit to our school.

–I’d like to buy a new CD player.     –Well, we have several models ________.

I know that no one likes the feeling of _______, but you can’t draw their attention in that way.

At the sight of the _____ scene, he was almost _____ to death. 

U．S．President Barack Obama arrived in China’s economic center Shanghai on Sunday night, November 15th 2009, ___ a state visit to China．

Having come to study in England, Wang Li had difficulty ______ the new environment.

The teacher wondered whether those ______at the back of the classroom could hear him.

 ____by the horrible earthquake, many buildings needed to be repaired in the capital of Haiti.

I really appreciate _______ to help me out.

 Sustainable development is long-term ________which focuses on the environment and  ________ natural resources.

______ a truck coming directly from the opposite direction, the car driver turned ______ right to avoid a head-on collision. 

The teacher looked at the student with a smile as if ______ him to answer the question.

 On seeing me, he turned over and pretended _____ around in the street.

 John reached out in a hurry ,        the door       .