Answer:
1. No es cierto que las matemáticas sean muy difíciles.
2. El presidente no niega que el problema del cambio climático sea bastante complicado.
3. Ana duda que él vaya a terminar el trabajo a tiempo.
4. Mis amigos están seguros de que esa película es excelente.
5. No cabe duda de que el español se usa más y más cada día.
6. No es seguro que Lourdes y yo podamos ir a ayudarte esta tarde.
7. El maestro no cree que Marcos escriba muy bien en francés.
8. No es verdad que Pedro y Virginia nunca comen carne.
Translation:
<em>1. It is not true that mathematics is very difficult.
</em>
<em>2. The president does not deny that the problem of climate change is quite complicated.
</em>
<em>3. Ana doubts that he will finish the work on time.
</em>
<em>4. My friends are sure that this movie is excellent.
</em>
<em>5. There is no doubt that Spanish is used more and more every day.
</em>
<em>6. It is not certain that Lourdes and I can go help you this afternoon.
</em>
<em>7. The teacher does not believe that Marcos writes very well in French.
</em>
<em>8. It is not true that Peter and Virginia never eat meat.</em>
Explanation:
This is an exercise about disagreements designed to train the relative pronoun "qué". The relative pronoun qué is used to connect sentences or phrases. In the passing from a simple sentence to a compound one, sometimes the verb must be subjunctive, depending on the certainty of the statement.
