[Q]: Objective: how do you see how many hits are left from a certain requester on mturk?
[A]: look up at the hits number on the top of the page.

[Q]: Objective: To prevent unwanted pregnancies when having sex,
[A]: wear a condom or use contraceptives before sex.

[Q]: Objective: how do you spread your legs?
[A]: stand them apart.

[Q]: Objective: To wash a knife.
[A]:
Use dishsoap and water. Wipe the blade of the knife clean, always pointing it away.