Дополните диалог: Bob: Can you give me any idea of the strength of the chimney 1_______ if we can us...: ответ на тест 1104948 - Английский язык

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Bob: Can you give me any idea of the strength of the chimney? 1_______, if we can use it as a support and bolt the duct brackets directly to it, this’ll mean a simpler job and it should also save a certain amount of time.
Max: And it’ll be cheaper, too.
Bob: Yes, quite a bit cheaper, 2_______.
Max: I can tell you at the moment that the chimney was only built a couple years ago, and is in good structural condition. What I can’t tell you, with any degree of certainty, is whether it’ll stand up to the kind of stress you’re proposing to put on it. As far as I can remember it’s a pretty strong job, so 3_______.
Bob: Yes. Well, it looks quite strong on our plans, but I can’t really tell, because they’re not sufficiently detailed.
Max:  I think we’d better not take any risk over this. I’ll call in a building expert and get him to examine the chimney, and perhaps you’ll be good enough to send me brief details of the loadings involved and the kind of brackets you’re thinking of using and so on.
Bob: 4_______. Thank you very much.