—I’m sorry,sir.I’ve made a lot of mistakes in the exam.—Never mind.________,the exam is a little difficult.
----Do you know _______ young man under the tree? ----Yes, but only a little, maybe he is _______ university student.
My father goes for a walk daily.
The little girl is fortunate to get help from so many strangers.
I will pay you a visit next month.
The enemy suddenly appeared.