Решение:
- My brother is talking to Tom now. (Present Continuous — действие происходит в данный момент).
- He works hard every day. (Present Simple — регулярное действие).
- That girl is speaking English very well. (Present Continuous — действие происходит в данный момент).
- My friend enjoys hamburgers very much. (Present Simple — факт, постоянное предпочтение).
- John and Frank are writing letters at this moment. (Present Continuous — действие происходит прямо сейчас).
- The children have been sleeping for two hours every afternoon. (Present Perfect Continuous — действие началось в прошлом и продолжается; или Present Perfect — The children have slept for two hours every afternoon. — для обозначения результата действия).
- It is raining very much in autumn. (Present Continuous — действие, характерное для данного периода).
- Miss Peters is talking to Mr Johnson right now. (Present Continuous — действие происходит в данный момент).
- We are doing Exercise 13. (Present Continuous — действие происходит в данный момент).
- My mother cooks very well. (Present Simple — постоянное умение, факт).
Ответ: is talking; works; is speaking; enjoys; are writing; have been sleeping (или have slept); is raining; is talking; are doing; cooks.