Vamos a comparar los siguientes ejercicios en el video:

FIRST CERTIFICATE

ADVANCED

VIDEO EXPLICANDO LAS DIFERENCIAS PRINCIPALES

BOTH

Similar reasoning to carry out the exercise
Grammatical structure as important as its meaning

FIXED EXPRESSIONS AND PHRASAL VERBS

B2: more common
C1: more formal, therefore less common

THE WORD MISSING IS PART OF A WHOLE

B2: the context provides the clues easier to spot out
C1: the clues provided are less obvious

THE WORD MISSING IS A SINGLE WORD

B2: Related to vocabulary than we have already seen
C1: Options are much closer in meaning and there might be only a slight difference.