Put yourself in situations where you're forced to communicate in English, ______ you'll see more progress over time.
There is no obvious evidencethere is life on any other planet in the solar system.
.Never_______Lisa would arrive but she turned up at the last minute.
It was by making great efforts_______she caught up with other students.
as an Olympic event, a sport must be played in at least 75 countries on at least 4 continents.
_______by the growing interest in nature, more and more people enjoy outdoor sports.