Best short difficult riddles

Cent, Sent and Scent.

NO since she is a 'widow', the guy's dead!

Because it was not peeling well.

A black hole.

Because he had nobody (no body) to go with.

Long time no sea.

Electricity.

111111111 Explanation: It's a maths magical square root series as : Square root of number 121 is 11 Square root of number 12321 is 111 Square root of number 1234321 is 1111 Square root of number 123454321 is 11111 Square root of number 12345654321 is 111111 Square root of number 1234567654321 is 1111111 Square root of number 123456787654321 is 11111111 Square root of number 12345678987654321 is 111111111 (answer)

A lost camel!

There is an angelfish there!