foggy

今天早上雾气很大，我看不清远处的建筑。

It was so ___foggy this morning that I couldn't see the buildings far away.

冬天早晨的雾气通常比秋天更浓。

Winter mornings are usually ___foggier than autumn mornings.

今天是我见过雾气最重的一天。

Today is the ___foggiest day I have ever seen.