—Listen! There is a knock on the door.Who _____ it be?—It must be Jack.Just now I sent for him.
Tourism, it brings in money to a country,can also result in damage to the World Heritage sites there.
It was not until the entrance exams were in sight that that I had so many books to cover and so many exercises to finish.
—The exam was easy,wasn't it? —Yes,but I don’t think could pass it.
—Are you sure that you are satisfied with this job? —Yes.Nothing can be better.
—Daniel must have lost his job in that unemployment crisis, he? —I don’t think so. Yesterday I saw him working together with his colleagues.