Поставьте глагол в нужную форму: Present Simple, Present Perfect, Present Continuous, Past Simple.

Краткий ответ:

1. takes
2. walks
3. are watching
4. is watching
5. had
6. left
7. have forgotten
8. has bought
9. have seen

Полные предложения:

1. Alice takes the bus to school every day.
2. She usually walks to school.
3. Where are the children? They are watching TV in the room now.
4. Look! Who is watching you?
5. The children had a good time in the park yesterday.
6. Kate left the sports club late last Sunday.
7. Who is this man? I have forgotten his name.
8. Mary has bought a new flat.
9. I have seen my parents today.

Как выбирать форму:

• Present Simple — регулярные действия: every day, usually. Поэтому: takes, walks.
• Present Continuous — действие сейчас: now, Look! Формула: am/is/are + V-ing. Поэтому: are watching, is watching.
• Past Simple — законченное прошлое: yesterday, last Sunday. Поэтому: had, left.
• Present Perfect — have/has + третья форма глагола, когда важен результат сейчас или период ещё не закончился (today). Поэтому: have forgotten, has bought, have seen.

Проверка: children — множественное число, значит are; who здесь подлежащее в единственном числе — is; Mary — has; I — have. В рамках этого упражнения в 7–9 нужен именно Present Perfect.