أرسل هذا في رسالة قصيرة: An investigation into the use of useful expressions to enhance speaking skills for the third-year students at hanoi university of business and technology

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