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1)Mozart was born in Salzburg __ 1756.(on,at in,during)
2)It has been raining __ two days without stopping.(on,for,during,at)
3)Many interesting suggestions were made __ the meeting.(into,onto,for,during)
4)My English coerses begin __ 7 January and end __ 10 March.(on/in,at/at,in/in,on/on)
5)I'm just going out to do some shopping.I'll be back __ half an hour.(at,for,while,in)