meaning of "Send up blind alleys"

[Katarina]

Test No. incompl/inter-29 "Who has done it?", question 2

The skill of course of the writing is how many times a reader can be sent up ......... alleys.

(a) short
(b) twisted
(c) blind
(d) long

Test No. incompl/inter-29 "Who has done it?", answer 2

The skill of course of the writing is how many times a reader can be sent up blind alleys.

Correct answer: (c) blind
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What does it mean sent blind up alleys?

Katarina

[Torsten]

A blind alley is a situation that is not effective or will not produce results. So, when send you readers up blind alleys you lead them astry.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary

[mudium]

dear teacher
why can't we use twisted hear in this answer
jyo

[Torsten]

Because "a blind alley" is a fixed expression with an idiomatic meaning while "a twisted alley" is not.
_________________
Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary