英语:How many times has the doctor been to England?---he ____ there twice

空格内填has been

has been

问句中应该是have the doctor been to England?

回来完成时的问题还用完成时

went- past tense

he went there twice already

填has been
问句里面是问的has..been
那回答肯定是has been啊

How many times has the doctor been to England?---he _has been___ there twice.
因为根据问句中的主谓而定