What is a sentence for tentative?

Here's a tentative schedule for the day.

The moment I heard that the baby couldn't come out, I felt that everything was crumbling, so fragile and tentative. ___ John asked Mary out on a date very tentatively, unsure of what she would say....

I was tentative of the question on the board. We made tentative plans to meet next Thursday and agreed to speak again on Monday to confirm them.

I can give you several sentences. That is just a tentative agreement. The party is tentative; I'll call later when we have firmer plans. He was tentative about going into the dark room.

"The parties set a tentative sale date in July.""The lion cub made one tentative swipe at the turtle and then scampered away."