Answer:
1. Tú tienes unos libros muy interesantes.
2. Tu compañera lee dos lecciones fáciles.
3. Hugo es mi buen amigo francés.
4. Nosotras dos somos personas simpáticas.
5. Sus hermanos menores asisten a las mismas clases.
Explanation:
In this exercise, you have to order the words and conjugate the verbs so that you can come up with sentences that make sense. In this case, the verbs are in present form.
B. Hemos sentido is the right answer
The answer is estan because estan in this case means "are".
they are sick.