When his dad died, he felt his world had turned upside – down.
Our hiking last weekend was ______ unusual and exciting experience and the terrible storm made it ______ real adventure.
Many college students now take part-time jobs in their spare time, hoping to be ______ of their parents.
Before making any changes to your travel plan, _______ your family to find out which activities are most important to them.
What impact is it ________ the worldwide economic crisis of 2009 has on the development of China.
“Darwin teaches us that life _________ continually ________ to keeping up with a changing Earth.” The expert explained.