Tom found _____ difficult to learn chemistry well. A.it B.that C its
----________ ? ----He lives in Bozhou.
----You speak very good English. ----_______.
----_____you from Australia ? ----I’m from Canada.
How many ____ are there and _____ milk is there in the bottle?
--- You didn’t come to school by bike today, did you? --- .It’s broken.