—Which colour do you like _______, blue or green? —Blue. 

 We should have ______fast food, ________fresh vegetables and take enough exercise.

—Miss Gao has ____________ free time than Mr Green.—I think so. She is busy every day.

Many experts think pigs are ______ to train than dogs or cats.

      animals are in danger and there will be        space for them if we don’t take any actions.