动词填空  用括号内所给动词的适当形式填空。（本大题共8分，每小题1分）
---No one answered the telephone when I called you yesterday afternoon.
---Oh, sorry, I ___________ (write) some film reviews in the study.
Would you please ________ (not move) at such high speed? It’s too dangerous.
---Look at the sign. It is “no photos” here.
---Oh, sorry. I _______ (not see) that.
A new kind of game called Red Envelop on wechat(微信红包)         (be) popular all over the country since January 26, 2014.
They _______ (prepare) for the coming test these days.
It’s impossible for him          (open) up another world in such a bad situation.
If we take some actions right now, we         (stop) the pollution to protect the environment.
No one except the twins ______ (know) the truth.