This job is ______ doing, but it isn’t ______ to spend so much time on it.

The teacher always waits until all the children ______ before he starts the lesson.

Though having lived abroad for years，many Chinese still________the traditional customs.

He is amazingly cheerful considering all that he has      .

Do you know that a living cell can be       for a thousand years if the temperature is right?

     reasonable, the proposal he    attracted much attention．

The difference in achievement between the pupils are partly ________by their differences in age.  

I believe a leaf of grass is    than a star in the sky．Every plant gives us pleasure in its own way．

After several rounds of I’m a Singer competition, Yu Quan _______ because of their excellent voices and performance.

 You should be ___________ confronting your roommates over any problems, especially if you have just met. Remember, be polite but firm.

 As time went by, the plan stuck ________ fairly practical. 

Many approaches have been _______ to control the spread of H7N9 Bird Flu. 

It’s already 10’clock. I wonder how it ____ that she was two hours late on such a short trip.

We would explain the things       the children’s understanding in a simple way.

Without my glasses, I couldn’t       whether that figure on the blackboard was a three or an eight.

If you’re to succeed,        to the job after finding the proper way to do it．

Police have asked witnesses of the accident to ___________, as the victim is critically wounded, unable to give an account of the accident.

 While we are busy living our dreams, our children are busy growing up, the people we love  are moving away and dying, our bodies are getting _________, and our dreams are slipping away.

As a job seeker, he should first decide what _______ and what he should have _________ in his resume(履历).

In order to gain a bigger share in the international market, many state companies are starving _______ their products more competitive.