Mr Mason, who holds the office of chairman, has _____ heavy a work load that it is difficult for him to travel

ly the whole nation, but thewhole Europe , indeed the whole human society ______ to alter its attitude toracial problems

30 Yesterday evening I came across the man _____ you think is pleased to _____

He looks as if he _____the answer— He has

Before Chinese Chang’e-2, the US sent up a space probe (探测器) to hit the moon to see ______.