A few questions about Adobe XD. How to do it?

Question

Adobe XD

Hello! Please help me solve a few questions.
1) How to make a curve into a filled shape like in illustrator using the expand function?
2) For example, there is a text that is in a group, and I want to make a background under it, draw a rectangle, and it is added on top of all layers, but is it possible to create it inside a selected group in layers?
3) How to make a translucent gradient in the picture, like in Photoshop using a mask?
4) How to duplicate an object at a given step, for example, as in illustrator, move the shape, press CTRL + D and duplication occurs at a given distance. Except as a repeat function (CTRL + R)

Answer 1

1. Not at all, but this feature has already been requested in the community
2. For some reason, all the latest editors do not provide for this, maybe there is a hidden meaning in this? But so far there is no such possibility.
3. Create a shape on top, select the gradient option in the Fill options, and make one of the sides transparent:
4. Mmmm.... exactly the same, Ctrl + D