单选题 Smoking in public places should not be ____, as it is harmful to one's health.

单选题 The room still has many of its ____ features, although it dates back to the 18th century.

单选题 How much were you ____ for the dinner at this restaurant?

单选题 In a way, having aged ____ to stay in your house can be rather pleasant.

单选题 The ____ of lighting the Olympic flame goes back centuries.

单选题 Many people return home to ____ with their family members for a special dinner on Chinese New Year's Eve.

单选题 The play was so funny that the children couldn't help ____ out laughing.

单选题 The time has come for action if these beautiful animals are to ____.