Question

given below are five groups of sentences each group consists of three sentences sum of which are incorrect find the amount and put a sign of cross decide them first:1) do you hear any unusual sound 2)she is having a headache. 3)she appears to have lost something.​

Answer 1

All the given sentences are correct.

Explanation:

Do you hear any unusual sound?

This is an interrogative sentence of present tense in which a question about an odd or unusual sound is being asked.

This is a correct sentence.

She is having a headache.

This sentence belong to present continuous tense. In this sentence a situation is being described that depicts that somebody is not feeling well.

So this is a correct sentence.

She appears to have lost something.​

This is simple present tense. This is also correct sentence.