— Is Jim coming by train?      —I’m not sure. He _________ drive his car.

---- It's so cold! Why are your windows still open?  ---- Oh, they _______．

The lady in the sitting room           be over sixty. She looks so young.

—Whose volleyball is it? —It ________ Carla’s. She doesn’t like volleyball at all.

Some of my classmates _________ after school every day.