IV. Use the correct form of the word given in each sentence. 17.He ____________ demonstrated his invention to the public. (succeed) 18.Charities rely on ____________ contribution. (volunteer) 19.Our teacher always ____________ us to work hard. (courage) 20.What is the correct ____________ of this word? (pronounce) 21.Her grades have ____________ greatly this semester (improvement) 22.It is always ____________ to write down important points. (wisdom) VIII. Rewrite the following sentences with words given. 37. Lan often went shopping at weekends. → Lan used .............................................................................................................................. 38. She started learning English two years ago. → She has ................................................................................................................................ 39. “Please pass me the salt”, the old man said to me. → The old man asked me ........................................................................................................ 40.The children enjoy walking in the rain. → The children are ..................................................................................................................