–Are you going to Shanghai by bus?--I am not sure. It’s cheap, but uncomfortable. I _____ take a train.
--- How many times you to the Great Wall?--- Once. I there three years ago.
—Would you like_________Shijing Hill with us next Sunday afternoon?—I will go with you unless my mother _________me.
—What happened to Billy?— He ___________ by the police because of his drunk-driving.
--What do you think of your math teacher?-- He is kind, he looks serious.
-–- I wonder if he to see us tomorrow.---I’ m sure if he , he will bring us some wonderful gifts.