she ____ (be) here since 1990.

问题描述:

she ____ (be) here since 1990.

She (has been) here since 1990. 这里since是"自从"的意思,通常与现在完成时搭配,因此须填has been.祝学习进步!

has been
祝你学习进步

空中填has been
翻译是:她从1990年开始就一直在这儿了
since通常与现在完成时态连用