The Chinese government has passed a new regulation forbidding supermarkets and stores to ______ free plastic bags to shoppers to protect the environment.
________a certain doubt among the people as to the practical value of the project.
We ________ contact with each other for years. And last week we ________ contact again.
The hotel wanted to charge $150 for the room service, but we couldn't ____________ to live in such an expensive hotel.
As is reported, it is 100 years________ Qinghua University was founded.
—What a mistake!—Yes. I________his doing it another way, but without success.