Question

He’s unlucky, and he’s always suffering _____ luck one after another

1. A.
   a sick
2. B.
   an ill
3. C.
   sick
4. D.
   ill

Answer 1

D
ill意为“生病”不可作定语；但意为“坏的，恶劣的”可作定语，在此修饰不可数名词luck。