二:语法和词汇知识(共20小题,每小题1分,满分20分)。6._________we must keep in mind is that we must protect water and use it wisely.
After a long time for many years, he is now _____.
–Don’t you think it a very nice motorbike? --Yes, but would you please ____ it on my lawn?
-- _____is that used for? ---_____ the floor.
Seeing this, the boss ______ and he_______ Tod to serve the customer this and that.
Of the Kar’s boys, Robert is the richest; in other words, Andrew and Krist are _____.