VERB + MAINTAIN
- be anxious to, want to
- We are anxious to maintain our close links with the police
- have to, need to
- strive to, try to
- help (to)
- be able to
- be difficult to
- The government's position became increasingly difficult to maintain
PHRASES
- the duty/need to maintain sth
- He emphasized the need to maintain the status quo
ADV
- properly, well
- poorly
- a poorly maintained central heating system
VERB + MAINTAIN
- be difficult to
- be easy to
PHRASES
- be responsible for maintaining sth