According to the recent research, heavy coffee drinking and heart attack is not necessarily ______ and effect.

Late again! What’s your ______ this time? 

The traditional approach __________ with complex problems is to break them down into smaller，more easily managed problems.

In our daily life, everyone fails every now and then. It is how you react that makes a_______.

Visitors were struck by the natural _________ here, which was beautiful beyond description.