Fill in ALL the gaps.
THEN press "CHECK".

1. I (to call) the police if my friend tried to steal my car. -> I the police if my friend tried to steal my car. 2. If Jack (to go) to a hotel Hugo could sleep here. -> If Jack to a hotel Hugo could sleep here. 3. Harry (to sing) a song if Ann had not laughed. -> Harry a song if Ann had not laughed. 4. If Columbus had not discovered Amercia somebody else (to do) so. -> If Columbus had not discovered Amercia somebody else so. 5. Al Gore would have won the election if they (play) fair. -> Al Gore would have won the election if they fair. 6. I would have come if my mother (to allow) it. -> I would have come if my mother it. © M.Schmoller