choose the odd word in eack row

题目

choose the odd word in eack row
1.while monkey tiger shark sheep
2.red blue orange pink yellow
3.britain japan china italy american
4.singer farmer cooker driver teacher
5.soup coffee tea 7-up coke
6.kitchen sitting-room bathroom flat bedroom
7.hiking surfing sewing ckiing jogging
8.onion peach spinach potato cabbage

答案

while
orange
china
cooker
soup
flat
sewing
peach