Question

They have undergone a supervision of their teacher but they have not succeeded in exchanging their answer sheets .
Write the correct linker in place of but .
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Answer 1

Answer:

They have undergone a supervision of their teacher but they have not succeeded in exchanging their answer sheets .

Write the correct linker in place of but .

Answer 2

I think it will be thus or so.

btw can I have your intro? :)