老师的解释非常清楚，我们都能理解。

The teacher's explanation was ___clear and easy to understand.

这块玻璃非常透明，我能清晰地看到窗外。

The glass is so ___clear that I can see outside perfectly.

请确保桌面干净整洁，没有杂物。

Please keep the desk ___clear of any clutter.

很明显他不喜欢这个计划。

It was ___clear that he didn't like the plan.

请把桌上的杂物清走。

Please ___clear the clutter from the table.