Matching adjectives

Let's work on using the correct adjective with the noun.
A difficult exercise?

OR
A strenuous exercise?

'This vocabulary exercise is difficult. the last one was easy'

BUT
Physical exercise can be strenuous or light.

ie 'I went on a strenuous run today. Yesterday my run was light.'


CLICK HERE to practice a bit.
                                                                                                                                                   thanks E4U