填空题 It takes Tom half an hour to go to school
Tom 1 half an hour 2 to school.

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【正确答案】 1、spends...going    
【答案解析】[解析] Tom spends half an hour going to school．spend some time doing sth意为“做某事花某人多少时间”，与原句中出现的句型it takes sb some time to do sth意思相近。