Experts suggest that teenagers spend at least 30 minutes exercising, five times a week. Walking and riding your bike _____ , and ______A.counts; so are school sportsB.count; school sports count, eitherC.count; so do school sportsD.counts; so school sports do
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C解析“专家建议青少年每周锻炼5次每次至少30分钟。散步和骑自行车很重要学校运动一样重要。”第一空考察主谓一致第二空考察倒装，