27. Mr. Bush is on time for everything. How ________ it be that he was late for the opening ceremony?
It wasn’t _____the anti-Japanese war was over _______ his parents had died two years before
--Do you mind if I keep pets in this building? --__________________________.
--Since you have enough time, why not try going by boat for a change? ---_____________________.
____she toured Jiu Zhaigou, He was deeply impressed with its beautiful scenery.
Great attention must be devoted ________ agriculture(农业), especially in China, ______ population is the largest in the world.