Our school covers an area of 400 mu, which is _______ as yours.
It was in the small house _____was built with stones by his father ____he spent his childhood.
__________ environmental damage is done, it takes many years for the ecosystem(生态系统) to recover.
I like this jacket better than that one, but it costs almost three times______.
Only when I left my parents for Italy __________how much I loved them.
I felt so bad all day yesterday that I decided this morning I couldn’t face ________ day like that.