ot what we do once in a while ______ shapes our lives, but what we do consistently.

Chang’e refused the magic medicine to Feng Meng.

We do our best to be careful and prevent bad things from happening,but most of us will________ find ourselves in a situation where we or someone else needs help

Whether you believe it or not, it is _________ that causes your illness.

y possible means ______ to prevent the air pollution, but thesky is still not clear.