________ is known to us a11 is that the Diaoyu islands have been part of our Chinese territory since ancient times.
Often they give up sport, _________they have no time _______after their work.
---John has made great progress in the last two months. --- _________, and _________.
The house, ____________is blue, will be used as a library.
Petroleum(石油), along with fuel gas, ________ in price. Thus a larger amount of money __________ spent on transportation.
---You are late again! We _________you could attend the assembly on time. ---Sorry, I __________to my office to get my papers.