write a debate should medium of instruction should be Englishonly
For the motion & against the motion

Such questions need to be attempted on your own to test your creative writing skills. However, these points might help you elaborate:
 
For:
- English is a global language.
- The language used in international trade and commerce is English.
- The content on the net on various topics is most easily available in English.
- A working knowledge of English has become a prerequisite in getting employment.

Against:
- There is greater ease in learning the mother tongue.
- A parochial language offers better understanding of the subject by using terms the learner is familiar with.