It's said that __________ is going to give us a lecture.

---I heard that he grew worse after taking the medicine．---Yes．He was ___________to it．                          

Thinking that her daughter was doing homework, the mother left the room, _____ . 

To reduce emissions of greenhouse gases, many countries are increasing the use of natural gas, wind and other forms of _______ energy.

There is a lot__________ to discover in these places. Every week we find new things