Put the verbs in brackets into the present perfect.
1
(you/order) yet?
2 Mum ..
(cook) dinner.
3 I'm thirsty! |
(not/drink) anything since this morning!
4
(you/ever/eat) lobster?
5
(not/see) Lucy today.​

The present perfect tense формула: have/has + past participle (3-я формула глагола).

1. Have you ordered yet?

2. Mum has cooked dinner.

3. I'm thirsty! I haven't drunk anything since this morning!

4. Have you ever eaten lobster?

5. I haven't seen Lucy today.