Question

(i) Rehan is not very good at his work. He
is
(efficient) (Use a prefix)​

Answer 1

Answer:

Rehan is inefficient at his work.

Explanation:

So, here, as mentioned in the question, we have used the word 'efficient' using a prefix. Inefficient means not achieving maximum productivity.

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Answer 2

Answer:

the answer is that .rehan is inefficient in his work.