1.b
ADJECTIVE
1, relating to, or characteristic of a town or city.
e.g. ‘the <em>urban</em> population’
2.a
NOUN
A state of stunned confusion or bewilderment.
e.g. ‘he was walking around in a <em>daze</em>’
3.c
NOUN
A test of the performance, qualities, or suitability of someone or something.
‘clinical <em>trials</em> must establish whether the new hip replacements are working’
4.a
relieved
ADJECTIVE
No longer feeling distressed or anxious; reassured.
‘<em>relieved </em>parents who had waited anxiously for news’
5.c
proposal
NOUN
A plan or suggestion, especially a formal or written one, put forward for consideration by others.
‘a set of <em>proposals </em>for a major new high-speed rail link’
Source: en.oxforddictionaries.com/