Which word is correctly used in the sentence?

you're probably wondering __ pounding on your door.

who's
whose

What strategy is a student using when associating the word disposition with a picture of a model posing?

Wha is"centrifugal bumble puppy "? why is it important for games to require a complication apparatus? (brave new world)

Which line of dialogue best describes mrs. x’s sense of superiority over miss y at the begging of the play? a. “if you wanted to shoot me it wouldn’t be so surprising, because i stood in your way.” b. “home is the best of all, the theatre next and children—well, you wouldn’t undertake that.” c. i embroidered them myself—i can’t bear tulips, but he wants tulips on everything.” d. it’s sinful to sit here and make fun of ones husband this way when he is kind and a good little man.”