It is so difficult a problem that ____ student in this class ____ work it out.

I like __________in the early morning when the air is fresh and I can take a walk around the garden. 

France has reported a second case of a new type of virus infection. The virus is similar to ______ that caused SARS, a breathing disease that killed 775 people in 2003.

 My mother always takes pride in __________ that encourages me greatly.

--- What do you think of these dictionaries?--- Most of them are updated. Still, ______ is so suitable for high school students as Multifunction English – Chinese Dictionary.