Question 1 with 2 blanksinsisto en que tú no (dar) entrevistas. no quiero que la prensa (saber) que trabajas en la película.
question 2 with 3 blankssi deseas que yo (trabajar) contigo, debes dejarme hablar con los periodistas. y te sugiero que tú (cambiar) el título si quieres que la película (tener) éxito.
question 3 with 2 blankses importante que nosotros (empezar) a rodar lo antes posible. tengo miedo de que la película (ser) cara. el título lo podemos cambiar más tarde.
question 4 with 1 blankprimero es necesario que tú me (decir) cuándo empezamos a rodar.

1. des, sepa

2. trabaje, cambies, tenga

3. empecemos, sea

4. digas

Explanation:

The times of the subjunctive mode must be used in the following situations:

* after certain words that indicate desire, hope, doubt or feeling;

* after speech and thought verbs in their negative form;

* after "cuando, mientras, hasta que, tan pronto como"…, if the action has not yet taken place;

* to describe someone or something that is not known and that has special characteristics;

* with the imperative of the 3rd person singular and plural in its affirmative form, as well as for the negative form of all persons;

* in concrete expressions that govern the subjunctive;

* after certain expressions and verbs that are detailed in the lists that you will find in the box.