This ____my sister and those ________ my parents.
The little boy walked in the crowed city and soon he was_______.
.____ you ____ to the park last week?
--_____ will you be back?-- In a week.
It’s polite _____ to your teacher when you meet him at school.
– Where would you like to go on vacation, Lily?– It’s hot here.I’d like to go _______.