--- Is this your bike?
--- No, It's bike.
A. this isn't, Li Lei's
B. this is, Li Lei's
C. it isn't, Li Lei's
D. it is, Li Lei's
网友回答
A. this isn't, Li Lei's
B. this is, Li Lei's
(答案→)C. it isn't, Li Lei's
D. it is, Li Lei's
解析：此题重点考查一般疑问句的回答及名词所有格，以Is this/that...?一般疑问句的回答不能用this/that,排除A、B，否定回答用NO，it isn’t，排除D，故选C