30.Little__ that we were watching his every move, so he seemed to be going his own way in this business.
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.
- I came all the way to inform you of the time and place of the meeting. -You could have __________ yourself the trouble by calling me.