—How long have you learned English?—So far, we ________ English for more than six years.
-I saw Mark on the playground just now.–No, it _______ be him. He is ill in bed at home.
You can’t imagine _______ when they received these nice New Year presents.
________ a beautiful car! I’ve never seen it before.
Susan and Lily ________ tomatoes and other vegetables on the farm this time yesterday.
The people in Ya'an have met lots of difficulties, but they haven't ________ hope.