-Give the correct form of the words in brackets:
Traffic jam (to be)___1___a common sight in big citties like Delhi, Mumbai, Calcutta etc. This is due to (increase)___2___population of the metropolitan cities. People from far off places rush towards big cities to (earn)___3___as big cities (have)___4___many options and possibilities for them. Then there are permanent citizens also. So with the human traffic , vehicular traffic also increases. As the standard of living is (become)___5___high everyone wants to (purchase)___6___ his own car.