We have to visit our grandparents this winter vacation because we miss each other very much.
| A．back to | B．get back | C．get back to | D．return back |
Each year quite a lot of food________ around the world.
| A．was wasted | B．is wasted |
| C．wasted | D．will be wasted |
Earth Day_______in 1970 to tell us to protect our planet.
| A．sets up | B．set up |
| C．is set up | D．was set up |
I hope I can do something to support . It’s meaningful and important to save some endangered animals.
| A．ORBIS | B．UNICEF | C．OXFAM | D．WWF |
We should ________good eating habits.
| A．develop | B．grow | C．increase | D．find |
—Dad，I was the first to reach the top of the hill.
—Good job, Mary. I’m_______of you.
| A．afraid | B．tired | C．proud | D．careful |