从方框中选出适当的词或词组,并用适当形式填空
promise 2.send 3.grow up 4.improve  




  1.As he____he began to take care OF HIMSELF
  2.These maps were_____a lot with the help of the satellites
  3.The tow communicate with each other by_____e-mail almost every day
  4.He has made a lot of _____ ,but none of  them have been carried out