She in a toy factory, but now she has a shop of her own.A、is used to workB、was used to workC、used to work
I’ll see to your cat when you aren’t in ? What does the underlined phrase mean ?
----______is the population of your city?-----About two million.
Please open a window _________ turning on air conditioning.
In those days ,books could only be produced one at a time _____________.
Food safety is important. Rules _____ to stop people from food pollution.