—Are you worried about the coming exam?—Only ______.

Though some foreign scientists had a ______ opinion of his new invention, his fellow workers never thought ____ of it.

I felt ______ tired, but he didn’t stop ______.

－If I’m not mistaken, your birthday is coming up. Has your brother sent you anything?－Not yet. He never forgets, _________.

We suddenly saw the bus about to leave and had to run _____ to catch it.