As a teacher rich in experience, he knows how to his ideas to these new students in a limited period of time.
Many difficulties have___as a result of the overuse of coal.
Though ill, he hasn’t____smoking.
My parents lent me money. Otherwise I____the trip.
____his scientific work, he has no time to care for his family affairs, which his wife always complains about.
She hurriedly left the room as if ___.