السلام عليكم
Find the mistake (from workbook) :
- He has just passed his exams , he is happy.

I think there is no mistake here
you can write the number of the page
or check it again

الجمله صحيحه خد بالك ان فى راس السوال مكتوب احدى العبارات صحيخه one is correct
اى خدمه

جزاك الله كل خير