Present Perfect or Past Perfect Exercises: Boşluk Doldurma Orta Seviye Quiz 7 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 .

Fill In The Blanks using Present Perfect Tense or Past Perfect Tense .
Boşlukları Present Perfect Tense veya Past Perfect Tense kullanarak doldurun.

1) Several researchers the article until last week, but they have submitted many since then.

2) The technician new software recently. The technicians had installed older software before that.

3) The scientists their findings until last quarter. They have published several reports since then.

4) The students in extracurricular activities this semester. They had participated less last year.

5) The teachers the meeting yet, but they had started the preparations yesterday.

6) Several interns orientation sessions recently. They had attended fewer sessions before summer.

7) The mechanics the vehicles by last Friday. They have repaired most since then.

8) The engineers the system thoroughly this month. They had tested less last month.

9) The assistants documents until yesterday. They have prepared most now.

10) The students their assignments until the deadline passed. They have submitted many since then.

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