02. Change the sentences into interrogative and answer.

Example: She has lost her bag.

Answer: Has she lost her bag?

Yes, she has lost her bag.

a) She has been to Italy.

b) My sister has bought a delicious chocolate cake.

c) We have just had lunch.

d) Mary has studied here for 5 years.

e) My friends haven't visited Europe

These sentences are exactly like the example you've provided. Simply move the "has", "had", or "haven't" to the beginning of the sentences and add a question mark at the end.

However, for question C, you will have to change the "had" to "have"

And for question E, you must say "have my friends visited europe?"

say the question in your head, and it makes a lot easier.