__________at a college or university in the US, Chinese and other international students must demonstrate a strong ability in both spoken and written English. 

---Could you tell me what made you so upset?----__________.

____ her friend was badly hurt, she burst into tears. 

—David，could I use your car?—Sorry，there is something wrong with it.I will have it________this afternoon.

Agriculture officials this week said strict control pressures are in place,___to prevent the red fire ants spreading across the country.