It’s a long time ago ______ I saw you last time.
We really don’t know _________ with our problems in learning English.
They were walking ________ a forest after they swam _______ the river .
_______should not be allowed to get ears pierced.
What would you do if you had _________ dollars ?
Jimmy is _________one-year-old boy and he has_________8-year-old sister.