Studying in groups is necessary _________________ you want to do well in school.
—My aunt said she called you yesterday morning, but there was no answer. —Oh, we were at home. Maybe my husband with my daughter and memy car in the garden.
─It’s said that sandstorms seldom hit that area,they? ─_______,but things are different now.
There’re many trees on ________ of the square playground.
----What’s in your ________ hand? ------Nothing but a coin.
__________ his bike that was bought made his parents very angry.