Question for some silly errors

[mo0ones]

Hi,
I always make mistakes in some stupid things and I can never find out how to correct myself. I hear and understand very well but I fail in making choice. For example you will hear:
woman. Do you have the camera? I'd like to shot of the facade of that building for my photography class.
man. That would be a nice photo, but we're out of film.

what does the man mean?
1. He would like to take a photograph
2. The woman can't take the picture
3. He can't give the woman the camera
4. The woman forgot to buy film
In a quick look I would choose number 4, but the correct answer is number 2. Both choices can be inferred. Would you please give me some advice to help me not make these kind of mistakes? I am afraid to fail the exam although my English is good enough.

Thanks

[melmotherr]

In this kind of questions, you can use elimination. Answer 4 can't be inferred, because anything has been said about "buy" film.

[La Sinjoro]

I have a question here.
Does anyone know how long accurately a lecture in Toefl Ibt lasts ?
I can concentrate to listen 4-5 mins lectures but I think it's so hard with longer lectures.