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One of our rules is that every student ______ wear school uniform while at school.

The lady ________ have done something wrong, because she is looking guilty.

—Do you think the rain will affect the football match?
—The players are used to such rainy weather, so it ______ make any difference to them.

— What does the sign over there read?
—“No person __________ smoke or carry a lighted cigarette，cigar or pipe in this area.”

Keep up good state of mind even if you _____ fail plenty of times.

Some people ________ not have plans yet for New Year’s Eve, but others know exactly what they will be doing.

—I’m thinking of losing weight these days.
—Oh, you_____be out of your mind. You’re 50 kilograms at the most!

Mary ____ be in Paris . I saw her a few minutes ago .

One of the few things you __   _ say about English people with certainty is that they talk a lot about the weather.

According to the new law, people found putting up “harmful” ads on the streets _______be punished.