In the following passage some words have been deleted. Fill in the blanks wi1h the help of the alternatives given. Select the most appropriate option for each number.

Comprehension:
Body language (1) ________ ideas or thoughts by certain actions, either intentionally or unintentionally. A(2) _______ can be a way of flirting or indicating that the party is only joking. A (3) ________ signifies approval, while (4) _______ of the head indicates a negative reaction.
Other forms of non (5) ________ language can be found in Braille (a system of raised dots read with the fingertips), signal flags, Morse code, and smoke signals..