How to know exactly whether I have to add "been" when I use present perfect?
The Victoria Hospital in Miltown ___ (1. close) to new patients after more cases of food poisoning. Three elderly patients __ (2. die) last week in the outbreak.
The instruction in my book suggests me to use present perfect or past tense. I'm sure 2. died, but the answer of 1. confuses me. Is it has closed or has been closed? Or are both correct?
I expect you'll explain when we use has + been + verb and when we use has + verb and their difference. Thanks in advance!