单选题 "Wendy has a terrible cold. " " How long ______ it?"
A. has she had B. she has had C. had she D. she has

【正确答案】 A

【答案解析】[解析] how long引导的是疑问句，主句谓语的位置应该倒装，排除C，D。感冒是在过去的某个时间感染的，并持续一段时间的，因此，应用现在完成时。