New medicines and instruments ______ every day to extend life.
It is reported that she was seen running away from the __________ of the crime.
After a month of hard work, most of the people in the city go to enjoy the __________ of nature in the country to get relaxed.
I tried phoning her office, but I couldn't __________.
Jane is very popular because she is easy to __________.
__________ a strange plant! I've never seen it before.