Usage and meaning of "fall through"

English as a Second Language English Teacher Explanations (ESL Tests)
1

English Language Tests, Intermediate level

ESL/EFL Test #176 [color=blue]“Phrasal idioms with the verb ‘fall’”, question 8

A recent survey showed that one in three house hunters have had a property purchase ….

(a) fall through
(b) fall behind
(c) fall back on
(d) fall out with

English Language Tests, Intermediate level

ESL/EFL Test #176 [color=blue]“Phrasal idioms with the verb ‘fall’”, answer 8

A recent survey showed that one in three house hunters have had a property purchase fall through.

Correct answer: (a) fall through

Your answer was: [color=green]correct
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why use “fall through” in this sentence?

2

Fall through = fail to succeed (of an agreement, plan, etc).

3

Deas it mean that One in three hunters didn’t make it to buy a property?

4

Yes, the sale was not completed.

5

that one in three house hunters -please explain, I’m confused about it, shouldn’t it be:

that one in three houses of hunters?
or
that one from three houses of hunters?

many thanks

6

What do you think a ‘house hunter’ is, Saneta?

7

house hunter= house of hunter? shouldn’t be: hunter house?

thanks

8

No. A house hunter is somebody who is looking for a house to buy.