—I called you at 8:00 last night, but you didn’t answer.—Oh, I ________.
If you try to do many things______, you’ll become tired out.
Would you like to tell us something about what a doctor’s life ______?
The old man was _______angry _____ a word. He didn’t say anything.
It is such that you muston it.
Middle school students _________ smoke because it is bad for their health.