There ____ many places of interest in Beijing. 

—Did you see him yesterday?—No, when I got to the airport, he          a taxi for home.

This morning the police ______ to the scene of the crime when it began to rain. 

- You seem to be familiar with this city. - I_______ here for three years. It's great to be back.

---When _____ your mother _____ you that blue dress, Lucy? ---Sorry, I really can’t remember. Maybe two or three weeks ago.