Question

While she was cooking. You............ waiting.
(a)were
(b)are
(c)had been
(D)has been​

Answer 1

Answer:

were

Explanation:

Answer 2

Answer:

( #When there is a past tense, the rest of the sentence will continue in past tense only and if one of the tense is simple past the second tense will never be simple past. )

While she was cooking, you had been waiting.

Hope it helps!