The boy ______ is standing at the school gate is our monitor.
My parents just called to say that they got __________ in a traffic jam.
-Why are you so late?-On my way to school, it __________ to me that I had left my English book home, so I had to fetch it.
Having suffered from serious pollutions, he made up his mind to devote his life to __________ pollution from __________ again.
He is in a lot better __________ since he has changed his diet.
It's not what we do once in a while __________ shapes our lives but what we do consistently.