It shocked me to see ______ my neighbors treated their children.
When ____ comes to saving energy, big changes start with small steps, like turning off the lights.
Of the two cameras, I would prefer ________ one, which is very easy for me to carry.
Mr Jones, a new teacher, stood in front of the students, his body ________ with fear.
.—Can you give some advice on what I said just now? —Sorry. My mind______.
Having _____ no-meat day would be a good way of encouraging _____ low carbon life-style.