They were kept waiting in the snow for a couple of hours,________．

ce, too，the Red Cross is expected to send help _____there is human suffering.

Where did you find the professor who madethe speech yesterday” “It was in the hall ______ the students often have a meeting”

Please tell me how the accident _________ . I am still in the dark.

Fifty-six ______ twenty-seven makes eighty-three.