找出下列每组单词中画线部分读音与其余三个不同的单词。
( )⑴A.sports B.workbook C.corner D.morning
( )⑵A.brown B.down C.now D.throw
( )⑶A.read B.breakfast C.sweater D.head
( )⑷A.got B.son C.come D.front
( )⑸A.country B.cousin C.touch D.out