1) Mike has already packed his suitcase.
2) He has been to four European countries.
3) Have you ever seen European bosons?
4) My friend has eaten wild mushrooms.
5) She has never touched moss.
Объяснение:
Это время Present Perfect, соответственно, предложение строится по определенной схеме: подлежащее (Mike, he, she...) + has/have + глагол с окончанием -ed (packed, touched...) или из 3-го столбика неправильных глаголов (been, seen, eaten...). В вопросе have/has выносится в начало предложения, а дальше все по стандартной схеме.
Choose the correct item.
1. It should be easy to find ... as a waiter.
A work
2. After three years as a(n) ...he became a fully-qualified electrician.
C trainee
3. This car park is for the use of members of ... only.
B staff
4. Mr. Brown was an employee here for ten years before becoming one of the ... in the firm.
D partners
5. He recently applied for the ... of Product Manager at Roundtree.
B vacancy
6. There have been no ... in our department for over a year.
B promotions
7. It was very ... of you to ask for a pay-rise.
A courageous
8. Chris is poorly paid and he only just makes enough money to live ... .
A on
9. When he retires at sixty, he'll get a very good ... .
C pension
10. A door-to-door ... has to do a great deal of walking.
B salesperson
11. My brother ... a lot of money from the sale of his house.
C made
12. He had to ... because of the poor working conditions.
A resign
13. I wouldn't say that he was very ...; he's been late every day this week.
D punctual
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