请用下列适当的单词填空：
sign / achieve / so far / deal with / success / process
1.He tried and tried but without any sign of ________.
2.Publishing a dictionary is a slow _______.
3.Those who'd like to visit the exhibition________your name here. .
4.They hoped to________ their aims by the end of the year.
5.It is the hottest day I have had _______.
6.Do you know how to __________this problem？