Hello! I have been invited for the EPSO CAST tests (verbal, numerical etc) which is good news. However, I'm not sure in which language will I be tested.

In my application, I have put English as my first language at a proficient level and French at a basic level. I thought that the tests are only in English but I'm now panicking what if they are in French and I won't be able to take them. Can you please help me understand how this works? I've started the preparation but in the same time I'm quite worried. Thanks a lot!