don’t know ________ such a difficult matter.

_ we _______ the new policy for economy, wewould never have bought the house.

we are busy living our dreams, ourchildren are busy growing up, the people we love are moving away and dying, ourbodies are getting _________, and our dreams are slipping away.

People tend to think that children’s IQ is _____ determines how well they are going to do in their future life

your uncle take a taxi to the airport．Why didn’t you drive him there—I,but my car．