_______ is shown in the report, the living standard of the people in China has greatly improved over the past decades.
I’m amazed to get in touch with my deskmate of Junior Middle school again. __________, it is ten years since we met last.
The chairman thought __________ necessary to invite Dr. Smith to speak at the meeting.
This is the first time I __________ to the capital to attend the celebration ceremony.
According to a new study by a British university, learning __________ second language can lead to __________ increase in your brain power.
--- Did he break it accidentally? --- No, __________.