He lost both of his parents in the big earthquake, but ________ for him, a kind couple adopted him and took good care of him[ ]

Jackson seemed crazy _______the Chinese culture when he visited China last year

Physics _________much easier for me since Mrs. Yang began to teach us.

saster-stricken village was inaccessible_______ by helicopter, and the storm added to the rescuers’ difficulty

Not until _____ his shoes did he enter one of the rooms of the Japanese house.