Verb
1. very high and loud; piercing
a shrill whistle
Test
1 / 5
She was listening to the English teacher absent-mindedly.
2 / 5
Los Angeles is abbreviated (to) L.A.
3 / 5
The government changed its policy abruptly.
4 / 5
a police academy
5 / 5
put one's foot on the accelerator
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