Question

which tense is used on these sentences Were you working at 9 o'clock ?
past simple
past continuous
past perfect​

Answer 1

This is past continuous tense.

Answer 2

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which tense is used on these sentences Were you working at 9 o'clock ?

past simple

past continuous

past perfect .

$\huge {\mathbb{\purple{A}\green{N}\pink{S}\blue{W}\purple{E}\green{R}\pink{!}}}$

Past continuous tense ,

Using - S + v1 + ING + compliment .

$\bold\purple{♡}{\red{\underline{\pink{\mathbf{Hope \: it's \: helpful \: for \: you .}}}}}\bold\blue{♡}$

$\huge\boxed{\fcolorbox{purple}{white}{Thanks}}$