1 - Change the sentences to the negative and interrogative form:
a) I have written articles on different topics.
Neg.: I have not (haven’t) written articles on different topics.
Int.: Have I written articles on different topics?
b) He has read various kinds of books.
Neg.: __________________________________________________________________
Int.: ___________________________________________________________________
c) They have saved money to travel.
Neg.: __________________________________________________________________
Int.: ___________________________________________________________________
d) I have had several tests this month.
Neg.: __________________________________________________________________
Int.: ___________________________________________________________________
e) Peter has taken the medicine.
Neg.: __________________________________________________________________
Int.: ___________________________________________________________________
f) We have discussed this issue a few times.
Neg.: __________________________________________________________________
Int.: ___________________________________________________________________
g) I have gone through this path before.
Neg.: __________________________________________________________________
Int.: ___________________________________________________________________
h) We have seen this movie with our kids.
Neg.: __________________________________________________________________
Int.: ___________________________________________________________________
i) He has spent all his money.
Neg.: __________________________________________________________________
Int.: ___________________________________________________________________
j) Leon has eaten too much.
Neg.: __________________________________________________________________
Int.: ___________________________________________________________________