Advanced past simple, past continuous & past perfect.  Choose the correct option (A, B or C) to comp

I _____ if you might help me with this. (tentativeness, politeness)

You're 60? You look as if you _____ 40! (unreal present meaning)

I wish I _____ the answer earlier. (unreal past regret)

She _____ the presentation when I arrived. (previous action; sequence not clear)

They _____ the results to be much better. (regret / unmet expectations)

She was exhausted; she _____ all night. (cause of a later past state)

Their clothes were muddy — they _____ through the fields. (deduction)

I _____ to talk to you about the new contract. (politeness / softening)

During exam week, I _____ late every night. (temporary repeated action)