When he ________ the door，he found his keys were nowhere

I phoned you at 7 yesterday evening but nobody answered.— Oh, I ______ my dog in the park then

_______ awful the weather is! I’m afraid we have to cancel our sports meeting.

________ on-going division between English-speakingCanadians and French-speaking Canadians is _______ major concern of thecountry.

It never occurred to me________ you could succeed in persuading him to change his mind