Miss Gao is very strict ________ her students ________ their studies.[ ]

It’s traditional in China to firecrackers on Spring Festival. —-But the serious smog（雾霾）nowadays needs us to stop it.

The smile on my teacher’s face showed that she waswith me.

Auatar（阿凡达）is such _________ wonderful science fiction movie that I want to see it _________ second time．

Lily and Lucy are twins and Lucy is ________ of the two.