Convert from perfect to imperfect and vise versa

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רֶגע, נא לְחכּות

yesterday אֶתְמוֹל

tomorrow   מָחָר

1. הוּא שָׁמַר

2. כָּתַבְתִּי

3. אַתָּה תַּעֲבֹד.

4. הֵם יִפְתְּחוּ

5. אַתֶּם רְאִיתֶם

6. נִקַּח

7. שָׁפַטְנוּ

8. יִסְגֹר.

9. יֵדְעוּ

10.מְצָאתֶם

11. אֲנִי אֶשְׁלַח

12. הוּא כָּתַב

There is a good reason that Hebrew Bible readers need to be able to convert verbs from perfect to imperfect and vise versa.
As we begin to study narrative texts we will see how these two classes are deployed by the writers.
Repeat the exercise above untill you can make the conversions easily.