In the test you have to select answer 2 and answer 3, otherwise the answer is wrong.
Advanced input mode
In the advanced mode you can change the 'Type of question' to Multiple choice (for one correct answer) or to Multiple choice with multiple answers (with more correct answers).
Optional: select a list with predefined answers. This list is editable if you open the file 'C:\Program Files\Teach2000\ml_english.txt_questiontypes.xml'.
If 'Shuffle answers' is checked, the answers will appear in random order in the test. Remember to uncheck this option if you have a referencing answer, like "C: A and B are both correct".