The old house used_________to_________. But now it canbe _________ .

The scientists all over the world are trying their best to develop _____ energy, such as sunlight, wind and water for power and fuel. [ ]

It’s really time I should go home, but I’m enjoying myself, so I ______ here a bit longer

If you are not sure how to use the words, you may ______ the words in your handout.

She wanted to borrow a book called Red and Black from the library. But she found there was ________ left. She had to wait.