-Where’s your father?-He ______ Beijing. He won’t be back ______ next week.
It’s necessary for usEnglish well.
Mrs Brown looks young., he is over 70 years old.
—When did the planeBeijing? —Sorry, I don't know.
Which is, the sun, the moon or the earth(地球)?
—Where is Peter? —I’m not sure,he’s at home.