I called you at 4:00 yesterday afternoon, but no one answered. — Sorry, I （ ） with my friends at that time.
（A）swim
（B）swam
（C）will swim
（D）was swimming
Are you going to the bank, Laura? — No, I （ ） to the bank already.
（A）have been
（B）have gone
（C）am going
（D）had been
So far this year, many new houses （ ） in Wuhan with the help of the government.
（A）build
（B）are built
（C）will build
（D）have been built
