The Americans remain officially optimistic - even if a little impatient - at India's pace of economic reforms. But whentwo countries as _____________ as India and the US gettogether to face complex _____________the world - there will be things that don't work. The focus - say US officials - is and should be on implementation. Both Barack Obama and Modi are sensitive that past _____________ about the world's most powerful and the largest democracies walking intothe sunset together has begun sounding _____________. Whenthey last met - they agreed to focus on getting things done.