Traveling is ______, but we often feel ________ when we are back from travels.

Some 6.6 million tickets are      through the London website over a six-week periodand organizers say all applications will be treated equally.

—Do you have any idea why the engineer resigned?—No. In fact, everyone is ____about it.

It is said that the people of Shandong Province are the most __________in helping others.

It is reported that the drivers who use mobile phones while driving are more ______ to have accidents.