____ are the requirements to take part in the Erasmus for Young Entrepreneurs programme? ____ do you want to do for a living when you grow up? ____ do you like the most about being abroad? ____ design do you like the most, the old one or the new one? I didn't know ____ to say to her question. ____ project was your favourite one? I am doing ____ I have been told. I can't tell which is ____. ____ of these 3d printers is more suitable for the job? I finally understand ____ the customer needs from us.

Choose between “what” and “which” in the following sentences.

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