--- I’m afraid it’s going to rain this afternoon.--- ______ Look at the dark and cloudy sky.
It is ________ he is often late for school ________ makes his teacher angry with him.
— I promise my daughter that she ________ get a nice present on her birthday. — I think it will be a big surprise to her.
The stranger who knocked me down said, “I’m terribly sorry. I ________ you.”
________ take a bus, I would walk to school.
________ physical examination is a must in many companies.