Answers :
1C A past
participle is required here because of the auxiliary verb 'be'.
2B This is the
only acceptable answer.
3D A noun with
the meaning 'duty' is required here
4A 'Must' has
to be followed by an infinitive.
5C All traffic
rules must be obeyed and not only a part of them.
6D This is the
only acceptable answer.
7A the verb
required must be an infinitive because of the modal verb
'could'.
8C The personal
pronoun 'them' is required to refer to 'motorcyclists' as the
object of the preposition 'of'. |