The doctors insisted that the patient was in danger, and that he __________on immediately.

He has _____ arms now and is able to pick the table up with one hand.

Do you smoke? — No, I don’tIt is two years since I ______[ ]

If everyone plays a part in protecting the environment， our world ________more and more beautiful.

You’d better go there by train The train ticket is _____ the airplane ticket [ ]