The flight to Guangzhou had to be            because of the heavy snow.

–Remember _____ to my daughter’s dance show next Friday. –Of course I will. I’ll never forget _____ her dance for the first time last year.

 --- Are you worried when your son often plays computer games? --- Yes. I think playing too many computer games ______ on teenagers.

Where __ Lily and Lucy from?

—Is there a football field? — Yes, _______! It’s the football field.