I wonder if they ______ a party on the coming Christmas Eve.—If they______, I am sure they’ll invite us to take part.

It’shottoday.Whynotgoforaswim—________.Let’sgo.

and gentlemen, please fasten your seat belts. The plane _____.

He bought glee him muchknowledge and ______ could help him to kill the time．

________, no one is sure who discovered America