Text this: Possible solutions to the problems commonly encountered by students at Hanoi University of Technology in pronouncing the English affricative consonants

  ____      ______    ______    ______  __    __  
 |  _ \\   /_   _//  /_____//  /_   _// \ \\ / // 
 | |_| ||   -| ||-   `____ `    -| ||-   \ \/ //  
 | .  //    _| ||_   /___//     _| ||_    \  //   
 |_|\_\\   /_____//  `__ `     /_____//    \//    
 `-` --`   `-----`   /_//      `-----`      `     
                     `-`