the teacher started teaching since1994=the teacher ___ ___for seventeen years.

问题描述:

the teacher started teaching since1994=the teacher ___ ___for seventeen years.

has taught

希望能帮到你,祝你成功!

the teacher started teaching since1994=the teacher 【has taught 】for seventeen years.
不明白的再问哟,请及时采纳,多谢 !