We have made ______ clear that we are strongly against smoking in the office.

 Waves of red light are about twice as long as _______ of blue light.

We have realised that ____ is much that can be done to help improve our environment.

-- If someone said ________ about you, would you be angry?--No, I wouldn’t.

 Lily had a bad stomachache. But the doctor said there was ____________with her.