I might fail,but________I insist on doing it.I never lose heart.
It is said _______has been translated into Chinese.
The meeting was long and the speakers said ______nothing worth listening to.
The Titanic, the biggest ship of its day, ____ unsinkable, but it sank on its first voyage in 1912.
We'd better get up earlier than usual if we want to catch the train, ______?
I once heard him ____ that a rainbow was a bridge from earth to heaven.