Решение:
Нужно вставить правильную форму глагола 'to be' (am, is, are) для каждого подлежащего.
- She is a teacher. (She + is)
- They are American and the other Japanese. (They + are)
- They are students. (They + are)
- She is from Madrid. (She + is)
Ответ: 1 is, 2 are, 3 are, 4 is.