therefore

今天下雨了，因此我们取消了野餐计划。

It's raining today; ___therefore, we canceled the picnic.

她忘了带钥匙，因此进不了家门。

She forgot her keys, and ___therefore couldn't enter the house.

我昨天生病了，因此没有去上学。

I was ill yesterday; ___therefore, I didn't go to school.