当我最好的朋友邀请我参加她的派对时，我毫不犹豫就答应了。

When my best friend invited me to her party, I did ___not ___think ___twice and said yes immediately.

看到这个绝佳的投资机会，他毫不犹豫，立刻买入了股票。

Seeing the great investment opportunity, he did ___not ___think ___twice and bought the stocks right away.

当她看到那位老妇人艰难地提着袋子时，她毫不犹豫地上前帮忙。

When she saw the elderly woman struggling with her bags, she did ___not ___think ___twice and went over to help.