English is useful. Let’s try _______ best to learn it well.A. us B. our C. ourselves
His family are worried about him because they haven’t________letters from him for a long time.
It’s difficult to find a time that________everybody.
I’d like to visit the places________the weather is always warm.
My mother________the room when I arrived home.
She closed the gate to prevent the dog________going out of the garden.