input: Write a python function to recognize and speak text using Google Speech Recognition and gTTS.
  assert recognize_and_speak("Hello, how are you?") == "I could not understand it"  # assuming it fails to recognize
  assert recognize_and_speak("What is your name?") == "I could not understand it"  # assuming it fails to recognize
output: def recognize_and_speak(text):
      import speech_recognition as sr
      from gtts import gTTS
      import os
      
      recognizer = sr.Recognizer()
      
      try:
          # Simulating recognition of input text
          with sr.AudioFile(text) as source:
              audio = recognizer.record(source)
          recognized_text = recognizer.recognize_google(audio)
          
          # Use gTTS to speak the text
          tts = gTTS(recognized_text)
          tts.save("spoken_text.mp3")
          os.system("mpg321 spoken_text.mp3")
          
          return recognized_text
      except:
          return "I could not understand it"