I _____ when it began to rain.
The doctor had almost lost hope at one point, but the patient finally__________ .
After ________________ a sandstorm warning on Sunday evening, meteorologists forecast that dusty weather will continue in parts of the country on Monday.
Having lived in China for 8 years, Helen has a good ______ of both English and Chinese.
—How about seeing the new comedy tonight?— I don’t like drama.
These animals are all used to their environment,______, they have learned how to live successfully in their habitat.