Mum, I’m really about the result of the exam.— Cheer up. I believe you can be successful.

He was lost in the busy streets. But at last it was _______ of him to find the way home.

Look at the tree, there are many birds ___it.There are also someapples it.[ ]

A low-carbon(低碳) lifestyle has an effect our daily life. People are paying more and more attention to energies these days.

What’s your English teacher _______? —He’s funny, I _______ him.[ ]