We have an art class ______ Wednesday afternoon.

Mo Ydreams come true.

Nowhere in nature is aluminium (铝) found free, owing to (由于) its always____with other elements (元素) most commonly with oxygen.[ ]

Hope is __________ most fairy tales share , wherever they’re told and for whatever audience .

14．This doubt had been in my mind for some time, but the research still went on____some reasons