我听不太清楚，所以医生清除了堵塞的耳垢。

I couldn’t hear well, so the doctor removed the earwax ___blockage.

医生说我血管里的堵塞需要尽快治疗。

The doctor said the ___blockage in my blood vessel needs treatment soon.

排水管里的堵塞导致了厨房积水。

The ___blockage in the drain pipe caused water to flood the kitchen.