Question

Объедините два предложения в одно с простой формой причастия I согласно модели.

Model:

The engineers designed a new device. They have to solve a few problems.
The engineers have to solve a few problems (while/when) designing a new device.

These facts illustrate his theory. They sound convincing.

These (Ответ) convincing when (Ответ)

Answer 1

Ответ: These facts sound convincing when illustrating his theory.