যেমন কর্ম তেমন ফল । (Translate into English)

The expansion of small and medium industries plays effective roles in solving the unemployment problems of a country.

Metro rail will play an epoch-making role in reducing the traffic jam in Dhaka.

Engendering efficient human resources is inevitable for the sustainable economic development.

It one of the main challenges for a country to accelerate economic growth and to alleviate income inequality.