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【題目】The policeman’s traffic directions made all the drivers quite .

【題目】It is the bus driver who should ______ the safety of the passengers.

【題目】These diagrams are especially helpful when we have a concrete problem ______ at hand.

【題目】They are determined to go into the dark cave, ________ my warning of danger.

【題目】 19th CPC National Congress which is major event in the country was held on Oct. 18, 2017.

【題目】I ______ for Shanghai this Saturday, so I want to know when the earliest plane ______.

【題目】All we have is 24 precious hours a day and therefore we shall waste ______

【題目】（題文）(2015·陜西) ____________ the delayed flight will take off depends much on the weather.

【題目】We are so tired. ______ we could take the day off tomorrow!

【題目】He looked calm, but a, he was very nervous.