The two iPads are both in fashion and of good quality, but of them are not on sale. So you’d better make your decision as soon as possible.
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, __________.