Code switching in EFL/ESL lessons

[shamshoque]

I'm just trying to have a feel among our colleagues about delivery of our lessons in 100% TL (Target Language) which is English. They say 100% use of TL is a prerequisite for Communicative Language Teaching (CLT).
My question is:
Are we delivering our lessons, be it English language or,  English literature, in 100% TL? If not, why not?
I'd request my colleagues to join in the debate. Thank you.

[fahad.faisal]

Nice Writing. It was really informative.