Correct Answer: My friend said to me, "I am very thirsty. Please give me a glass of water."

Solution : The correct choice is the fourth option .

In direct speech, the words of the author are directly quoted.

The steps of conversion are as follows:

• The reporting verb "told" is converted to "said" according to the structure of the sentence.
• The pronoun "he" is changed to "I", as the words are directly quoted.
• To express the request made by the friend, the word "please" is used.
• The past tense auxiliary verb "was" is changed to its present form, "am".
• The words of the speaker are enclosed in the inverted commas.

Therefore, the sentence in direct speech is: My friend said to me, "I am very thirsty. Please give me a glass of water."