I can't move my arm.
I think it's that.
You weren't able to do that.
Please do that.
You can't go there.
You are able to do that.
Ask if you can do that.
It isn't necessary to do that.
I think it's broken.
It's forbidden.
May I do that?
You couldn't do that.
You needen't do that.
It might be that.
Would you do that?
You can do that.
