Hello, Mike. Long time no see, Where are you?—Oh, not only my parent but also I __ Wuhan for a month.
Is Mr Smith still in Shanghai?—Yes，he _______there for two months．
What do you think of haze(雾霾)？ —- It ____ us we all must try to do something to stop the air pollution.
I went to Daming Lake yesterday. There were ______ people.—Yes. Everyone wants to go out on such a good day.
Why does she always ask you for help? —There is no one else ______, is there?