No sooner had the thief seen the police ____
A
than he ran away
B
than he run away
C
than he had run away
D
when he run away
Correct Answer: than he ran away
No sooner had the thief seen the police than he ran away. The expression 'no sooner…than' is used to suggest that, one action or situation takes place/took place immediately after another action or situation. It is often used with the past perfect, and usually followed by than. It can be used only in a sentence in which two actions take place.