Teachers have to constantly update their knowledge in order to maintain their professional ___.

This research has attracted wide _______ coverage and has featured on BBC television’s Tomorrow’s World.

 Schools that serve healthier food, offer nutrition education and reward students for good eating habits can make a major        in preventing childhood obesity.

Having lived in China for 8 years, Helen has a good ______ of both English and Chinese．

The teacher has a(an) ___________ to get off topic; sometimes it is difficult for students to make out what he is saying.  

She must have ranked her birthday presents in order of           because the top one is her favotite.

The moonlight was quite bright, and about fifteen yards up the road there was a deep _______ thrown by a tree.

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

I hope my teacher will take into _______ the fact that I was ill just before the exams when she marks my paper.

He has not enough ______ to walk so far. 

I can remember very few ______ when he had to cancel his plans because of poor health.

----Do you have anyone particular in _____ for the job?----In my opinion, Tom is the right person.

We have strong ________ for believing that the newly-invented material is not only popular but also a monument to the eco-friendly lifestyle.

NASA has made a ________ that our earth has no threat associated with the film 2012 which is based on pure myths.

The situation was        and the people present were       .

The boy led his mother to the ________ of the accident.

Children nowadays are bought up on a _______ of television cartoons and soup operas. 

I have a firm ____in the power of communication, which will smooth away misunderstanding.

—Mum, I will leave for tha party. —Remember your     .thank your friend when you leave the party.

It is the           in this country to go out and pick flowers on the first day of the spring.