Why does the idiom 'no time to lose' not mean to 'procrastinate'?

[Samuel]

English Idioms and Expressions, Intermediate level

ESL/EFL Test #20 "English Idioms and Phrases", question 7

I need everybody's help. The wedding is tomorrow and we haven't even started with the decorations yet. We have no time to lose.

(a) been procrastinating
(b) to remember what time it is
(c) extra time
(d) to start right now

English Idioms and Expressions, Intermediate level

ESL/EFL Test #20 "English Idioms and Phrases", answer 7

I need everybody's help. The wedding is tomorrow and we haven't even started with the decorations yet. We have to start right now.

Correct answer: (d) to start right now
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How come this sentence"no time to lose" doesn't mean someone has been procrastinating?

Samuel

[Conchita]

To 'procrastinate' is to delay or put something off until later. In the test story, they are in a hurry because there is a lot to do before the wedding -- they have to start right now. It is indeed possible that someone has been procrastinating, as you suggest, but we don't know that. What we need is a similar expression to 'no time to lose'.