In English, ‘like’, ‘want’, and ‘need’ need objects. The sentence cannot finish after the verb.

Incorrect Examples

‘Do you like cheese?’
‘Yes, I like.’

‘Who wants an ice-cream?’
‘I want.’

‘Does anyone here need a lift to the game?’
‘I need’

Correct Examples

‘Do you like cheese?’
‘Yes, I like it.’

‘Who wants an ice-cream?’
‘I want one.’

‘Does anyone here need a lift to the game?’
‘I need one.’