Food safety is important. Rules to stop people from food pollution.A、must make B、must be made C、can’t be made
His aunt ________ Beijing and she will stay there for three years.
Half of the class ________ done most of the work. The left ________rather hard.
---Mr Wang, I have trouble ________ the text. ---I’m sure you can, but remember ________ it at least three times.
---Look at those shoes, Mike! ---Wow! They look very cool, but I wonder ________.
The scientist’s last words _________us that we should protect the environment around us.