It is rather ______ that we still do not know how many species there are in the world today.
The famous film star wore dark glasses so that no one would him.
catch the first bus, he got up very early this morning.
--Look! The telephone is broken. Someone damaged it ________ purpose. --That may be right. But perhaps it was broken _________ accident.
It was because of bad weather __________ the football match had to be put off.
It is the first time that I _______ this kind of moon cake.