---Excuse me . Is this the right way to the Water World ?---Sorry! I’m not sure. But it ______ be.
----Can you understand my words? --- Sorry, I can ______ follow you.
----- I don’t think waste water should be put into the rivers or lakes.----_____.It will cause much water pollution.
--- Oh, Jack’s not here these days. Is he ill?---________. His mother told me that he was in hospital.
-- How about going shopping on Renmin Road this evening?--- ______,but I have to prepare for tomorrow’s exam.
----Your monitor is never late for school, is he?--- ______.He always comes to school earlier than others.