The Chinese government has passed a new regulation forbidding supermarkets and stores to ______ free plastic bags to shoppers in order to protect the environment.

 ________ in a heavy rain, my daughter fell ill and couldn’t but______ for a leave.

— Why not buy a second-hand car first if you don't have enough money for a new one?— That's a good        .

The old rules have to be    _____because they only applied to the circumstances that existed when they were made a hundred years ago.

．In this company, suggestions have to wait for months before they are fully      ________.