The elderly need special care in winter, as they are ______ to the sudden change of weather.
-- You ought to have given them some advice. --- , but who cared what I asked?
---You’ve read the Frog by Moyan,haven’t you? ---Yes,I_______second time and I got a better understanding.
We should get prepared for dealing with ________problems_________
We’ll never forget this terrible accident and the damage_______has caused to the area.
______, I believe, and you will find the student is very outgoing.