this is the first time the students____to XXXXXXX ……
问题描述：
this is the first time the students____to XXXXXXX ……
this is the first time the students____to XXXXXXX
a,have gone b,have been gone c,have been going d,are being gone
答
this is the first time （that）the students__A__to to the China Pavilion.(中国馆) （用现在完成时）
比较这一句：
this WAS the first time (that) the students HAD GONE to the China Pavilion.（用过去完成时）
-----------千万记住哦!-------------