单选题 Children under sixteen are not___ allowed to buy cigarettes.

单选题 The government will never___ drugs like cocaine.

单选题 More and more people began to enter the country___

单选题 We want to promote ___on a mass scale.

单选题 China has changed from being a country where the great majority was ___to one where the great majority is literate.

单选题 People are not really ___to talk about these kinds of personal problems.

单选题 I'm happy to join in the protest—but I don't want to do anything___

单选题 Differences over these issues narrowed during the ___meetings.