题干

Welcome to the Ice Bucket Challenge. The challenge is simple: when , one either pours a bucket of icy water over his or her head or donates $100 to the ALS Association.
A.to challengeB.challenged
C.you challengedD.having challenged
上一题 下一题 0.64难度 单项选择 更新时间:2015-01-04 07:10:19

答案(点此获取答案解析)