Li Xing’s illness(病) is very_____. You must take his illness ______. 

English is          too difficult for me. I can't learn it well.

—How often does the programme Xiuhuliaozhai come out on YWTV? —It comes out every Saturday, it’s a ________ programme. 

--_____is the post office ?--- Go straight and turn right.

English will help us ______ in our work and study.