Ответ:
English Exercise: Present Simple, Past Simple or Present Continuous?
Explanation: The phrase 'at the moment' indicates an action happening right now, so we use the Present Continuous for 'not write' and 'play'. For 'think', when it expresses an opinion or belief about a present situation, we usually use the Present Simple.
Answer:
He is not writing (or isn't writing) his home task at the moment. I think he is playing on the computer.
