Question

1. Choose the correct answer: 1. I am waiting / have been waiting here for you for since half an hour. 2. Ethan has never ever been skiing before. 3. We haven't gone to Austria yet/ already. 4. Yesterday I called / have called Paula to invite her to the party. 5. Leo has been learning Spanish for since two years. 6. We have done / been doing three exercises on this page so far / before.
​

Answer 1

Ответ:

1. have been, 3. yet, 4. called, 6. have done-before