Put the verbs into present perfect passive. 1. a new university ( open) in kew today by prince of wales. 2. lord retlaw (arrest) for drunk driving. 3. an old painting from a school in wales ( buy) for $250,000 by an american museum. 4. the two lost children ( find) alive and well in a londen park. 5. an uknown actor ( choose) to star in the new film of "macbeth".

1. has been opened
2. has been arrested
3. has been bought
4. have been found
5. has been chosen

1. A new university has been opened in Kew today by the Prince of Wales.

Explanation: We use the present perfect passive tense when the action has been completed in the past but the exact time is not mentioned or is irrelevant. In this sentence, the new university has been opened today, but we do not mention the exact time. "Has been opened" is the present perfect passive form because "a new university" is the subject and "open" is the verb, which is in the past participle form and used with the helping verb "has been."

2. Lord Retlaw has been arrested for drunk driving.

Explanation: Again, in this sentence, the action of Lord Retlaw being arrested has been completed in the past, but the exact time is not mentioned. "Has been arrested" is the present perfect passive form because "Lord Retlaw" is the subject and "arrest" is the verb, which is in the past participle form and used with the helping verb "has been."

3. An old painting from a school in Wales has been bought for $250,000 by an American museum.

Explanation: In this sentence, the action of the old painting being bought has been completed in the past, but the exact time is not mentioned. "Has been bought" is the present perfect passive form because "an old painting from a school in Wales" is the subject and "buy" is the verb, which is in the past participle form and used with the helping verb "has been."

4. The two lost children have been found alive and well in a London park.

Explanation: The action of finding the two lost children has been completed in the past, but the exact time is not mentioned. "Have been found" is the present perfect passive form because "the two lost children" is the subject and "find" is the verb, which is in the past participle form and used with the helping verb "have been."

5. An unknown actor has been chosen to star in the new film of "Macbeth."

Explanation: The action of choosing an unknown actor to star in the new film of "Macbeth" has been completed in the past, but the exact time is not mentioned. "Has been chosen" is the present perfect passive form because "an unknown actor" is the subject and "choose" is the verb, which is in the past participle form and used with the helping verb "has been."