[مستر محمد ديوشي عطا]

1
To my surprise, I found several letters on the mat. (expected)0

Finding several letters on the mat wasn't expected by me .0
I hadn't expected to find several letters on the mat. 0
2
The students spent more time studying unit 5 which wasn't included in the exam. ( needn't

The students needn't have studied unit 5, as it/ which wasn't included int the exam.0