Look at the floor , Tom ! _____you watch TV while having a meal?
He ____ me to keep away from cigarette and take more exercise.
Canada,Australia and New Zealand are all ____ countries.
-Did your uncle fly to Paris directly? -No,he travelled from Hong Kong _____ London.
-My mathematics is very poor. -Don’t worry. I’ll help you ______ I can.
-If you have time tonight,I’d like to invite you to a ball. -That’s very nice of you,but are you ____?