Being hard-working is of the highest __________ to becoming successful.
By making friends with the native speakers, one can _________ a lot of their language.
The lecture that Mr Chen made this morning gave a strong ___________ on the students.
After the long journey, the Whites returned home, ___________.
Only when I made it to the train station _______ that I had left my ticket at home.
Much to our grief, the victims injured or killed in the terrible earthquake have reached _______ 10,000.