-- _____ lovely weather!     -- Yes! Just right for walking.

--- I’ve just got a postcard from my pen friend.--- Let me have a look. Wow. _____ nice card! 

         difficult questions the teacher is asking! Only a few students can answer them!

 —We will build a high-speed railway in Taizhou before 2015.—Wow, ________ exciting news! 

_______useful the dictionary you gave me last week is!