4. Change the sentences into negative and question form: 1) I went to Cartagena last holiday. 2) She wrote a beautiful poem.

1. Negative: I did not go to Cartagena last holiday.

   Question: Did I go to Cartagena last holiday?

2. Negative: She did not write a beautiful poem.

   Question: Did she write a beautiful poem?

After did or did not, the main verb takes its base form.