Best medium riddles for kids

Today is Admin's birthday. His five close friends Nell, Edna, Harish, Hsirah and Ellen surprised him with party. What is special with this list of these five names?

What can you swallow than can also swallow you?

What is always coming but never arrives?

What kind of room has no doors or windows?

What can you hold in your left hand, but not in your right hand?

What does the orange do, when it takes a test?

What do ghosts wear on their feet?

What is the last thing you take off before bed?

Throw away the outside and cook the inside, then eat the outside and throw away the inside. What is it?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?