The little girl crossed a large area of grassland into the woods _________ she realized that she was lost

my classmates accidentally ____ he had cheatedin the last examination, or he wouldn’t have got so high a mark.

He asa national hero for winning the first gold medal for his country in theOlympics.

______ we deal with our problems ,wecan easily become unhappy.

Tom is such a stupid student that he had failed in every exam—Sorry, I won’t agree He is ________ than stupid