1.他们正在浏览报纸。
They are _                      the newspaper.
2.冬天经常下雪,不是吗？
It often           in winter,                             ？
3.昨天天气对我来说有点冷。
It's                               cold           me yes-terday.
4.很多人在排队买票．
Many people                                                             to buy tickets.
5.绿灯时，你可以通过马路。
When the light is _         , you can          the street.