It’s true that everyone loves a mystery, ___________ when mixes history with fiction. That’s why “ The Da Vinci Code ” is so popular.
No one can________how the election will turn out, as there are many unknown facts.
_________ energy are abused in our daily life, only causing waste.
He being a child of ________ intelligence,expecting too much of him will make him nervous.
We should think hard ________ human activity has caused greenhouse effect.
The date for the next round six-party talk ________ but whether progress will be made remains ___________.