1 . As the old saying goes,“A workman must __________ (sharp) his tools if he is to do his work well.” (所给词的适当形式填空)

2 . The work of the charity ______ (fund) by voluntary donations. (所给词的适当形式填空)

3 . As far as I know, a large amount of money__________spent on the construction of the school last year. (用适当的词填空)

4 . With more knowledge ________ (come) a deeper, more wonderful mystery, inspiring one to look deeper still. (所给词的适当形式填空)

5 . Tu Youyou’s education was soon ________ (prove) very useful. (所给词的适当形式填空)

6 . No matter ________ we are, we are able to keep in contact with loved ones with all sorts of communication software. (用适当的词填空)

7 . ________ the largest rainforest in the world, the Amazon rainforest plays a significant role in maintaining the fine balance of the Earth’s ecosystem. (用适当的词填空)

8 . The experiment ________ (mention) in your article is interesting. (所给词的适当形式填空)

9 . The forest’s different levels support an unbelievable ________ (vary) of wildlife. (所给词的适当形式填空)

10 . The Amazon rainforest is more than half ________ size of China. (用适当的词填空)