I taste better than I can smell. Who am I?

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

What word is pronounced the same if you take away four of its five letters?

How can you leave a room with two legs and return with six legs?

John leaves home and then he takes three right turns. John wants to return to home but he was scared of Jacob, who is wearing a mask.

What is John Situation ?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

I have teeth but i don't bite. Who Am I ?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?