The following hints are available in ET (English Tester):

• Skip test - skips test and jumps to the next one
  • Present in all tests.
• I give up - shows the correct answer automatically
  • "Word formation"
  • "Definitions"
  • "Tenses"
  • "Apply given word"
  • "Finish sentence"
  • "Find mistakes"
• Reset - resets the test in case you need the original sentence in an unaltered form
  • "Word formation"
  • "One word fill-in"
  • "Apply given word"
  • "Finish sentence"
• Remove one - removes one incorrect answer form the list. Removing the wrong answer for the third time works like the "I give up" option and counts in your statistics.
  • "Lexical"
• First letter (next letter) - shows you the first/next letter of the correct word. Revealing the last letter finishes the test and counts like the "I give up" option in your statistics.
  • "One word fill-in"
• Show mistake - resets the test to its original form and highlights the mistake.
  • "Find miskates"

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