Choose the correct answer: ... you ... (be) to the museum this week?

Rationale:

• The question is in the present perfect tense, which is used for actions that happened at an unspecified time in the past or that started in the past and continue to the present.
• The structure of the present perfect tense with 'you' is 'Have you been...?'
• 'Were' and 'Was' are used for the past simple tense, and 'Has' is used for the third person singular (he, she, it).

Answer:

Have ... been