Present Perfect or Past Perfect Exercises: Çoktan Seçmeli İleri Seviye Quiz 1 Online

Present Perfect Tense ve Past Perfect Tense karşılaştırma alıştırmaları ve quizler ingilizceciyiz.com ‘da.
Present Perfect Tense vs Past Perfect Tense comparison exercises and quizzes are available on ingilizceciyiz.com .

Choose the option that completes the sentence by using Present Perfect Tense or Past Perfect Tense .
Present Perfect Tense veya Past Perfect Tense kullanarak cümleyi tamamlayan seçeneği seçin.

1) Several biologists ecological changes recently, contributing to conservation efforts.

2) Some specialists their reports before the deadline last week.

3) The project managers schedules before the client presentation last week.

4) The editorial staff the proofreading before the print deadline yesterday. The release was delayed.

5) Some teachers additional coursework recently, but students have not completed all assignments yet.

6) The dentist appointments before the holiday break last year. Many patients were inconvenienced.

7) Many developers the software since the last release two weeks ago.

8) The workers the network issues before the system went offline yesterday.

9) Many nurses vaccines since the campaign began two weeks ago. Community health has improved.

10) Some supervisors team performance just now. Feedback has been constructive.

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