I really don’t know______ Mary found her lost necklace that day.
The woman was about to open the door _______ she heard a strange sound from inside.
The reason_____ she gave for not being present was _____the heavy snow prevented her coming.
Often he______ sit for hours doing nothing at all when he was in low spirits.
—What are you anxious about? — ____
Mrs. White found her husband ________by letters and papers and________ very worried.