What’s the matter with the little boy?—A bad traffic accident happened _____ him. What a pity![ ]

Although he is considered a great writer, _____.

How old are you?—I’m fifteen. I was born _______ 1990. [ ]

There was a fire in the hotel around midnight last Friday. Luckily, it was soon .

____ do you study for a math test? —I study math ____ lots of exercises.