用动词的适当形式填空:——What did the snake do when you_____(step)on it yesterday?--It _____(spit)poison.I had to see the doctor at once.

问题描述:

用动词的适当形式填空:——What did the snake do when you_____(step)on it yesterday?
--It _____(spit)poison.I had to see the doctor at once.

What did the snake do when you_stepped____(step)on it yesterday?
It _spit____(spit)poison.I had to see the doctor at once
用过去时

——What did the snake do when you_stepped____(step)on it yesterday?
--It __spat/spit___(spit)poison.I had to see the doctor at once.