他们建了一堵坚固的砖墙以保护隐私。

They constructed a sturdy ___brick wall for privacy.

未来，房屋可能完全不用砖块建造。

In the future, houses may not be built from ___bricks at all.

他不小心掉了一块砖，砖摔碎了。

He accidentally dropped a ___brick and it shattered.