The beautiful lake is ________worth visiting[ ]

Hundredsofdrunkenleft-wingsthrewstone,bricksandbottlesatthepoliceandattemptedtoescape________butfailed. [ ]

Hello! Is that Tom over there Long time no see. Let’s say hello to him.—Please _____ in the library.

Mary _________a professor for half a year.

In order to keep healthy, you’d better _______.