Some hobbies are very expensive,but others don't cost anything______
Some hobbies are very expensive,but others don't cost anything______
A.first of all
B.ar all
C.of all kinds
D.in all
请问应选哪个?为什么?请分析详细一些.
参考答案:应该是B，at all吧
at all
adv.
根本（一般用在否定句，疑问句）
“一些爱好要花费很多资金，而其他的则根本不花钱”