Like a little angel

[Howard]

Test No. incompl/elem-14 "Computers", question 8

Never mind, most of the time it behaves like a little ..........

(a) angle
(b) angel
(c) angelic
(d) angles

Test No. incompl/elem-14 "Computers", answer 8

Never mind, most of the time it behaves like a little angel.

Correct answer: (b) angel

Your answer was: n/a
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I did not really get the meaning of this sentence

[Alan]

This means behaving/working perfectly.
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English as a Second Language
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