### Clue: Pretend to be with it around left-leaning Australian guy on ecstasy (7)
### Answer: IMITATE 
 ### Explanation: Definition: Pretend to be
 IT **containing**(around) **reversal of**(left-leaning, in an across clue) [A(abbrev. for "Australian") + TIM(a guy/man's name)] + E(abbrev. for the drug Ecstasy).