Question

---Have you ever been here before?
---No. this is the first time that I       to the Great Wall. 
A   comes   B   have been   C  came  D had been

Answer 1

：B

：考查特殊句型用法。句式：It/this is the first time后面的从句使用现在完成时。如果前面是was,后面要使用过去完成时。故B正确。