A, Tacos is plural so "gusta" must be plural too.
b it is a regular verb and follows the pattern of er verb
The correct answer is A - El libro esta debajo del escritorio. Debajo means below/under
1. iglesia (church)
2. costumbre (habit)
3. preparativos (preparations)
4. desfiles (parades)
5. adornados (decorated)
6. fiesta (party)
7. comparsa (a group of dancers and singers<span>)
Hope this helps! Also, I think 4 and 6 could be switched with each other. </span>