Mumbai, July 7 -- Euro has come off a four-year high against the US dollar today as markets eyed the global trade talks and some corrective action emerged in the single currency following recent gains. EUR/USD pair hit around 1.1900-mark last week amid firm economic cues. Private sector activity growth across the Eurozone in June was revised higher on Thursday, according to S&P Global and Hamburg Commercial Bank (HCOB), hitting its highest in three months. The HCOB eurozone composite purchasing managers' index (PMI), rose to 50.6 in June from 50.2 in May. This was above the preliminary estimate of 50.2 and was also the sixth straight month above the 50-point mark which separates growth from contraction. EUR/USD currently quotes at 1.1807,...