Fill in the blak -Education should teach all to ....
A
oil one's tongue
B
oil your own machine
C
oil the car
D
oil the wheel
Correct Answer: oil your own machine
Oil your own machine একটি Proverb এর অর্থ হলো – আপন চরকায় তেল দাও। সুতরাং সঠিক উত্তর অপশন (খ) ।