—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
serious the economic situation is, they still have confidence in overcoming all the difficulties.
The teacher that his students had difficulty in English grammar, decided to give them more examples.
Over the past decades, sea ice is decreasing in the Arctic global warming.
Never in my dreams Zhao Benshan’s performance during the CCTV Spring Festival Gala was considered the best.
The woman rushed out she felt the house shaking.