試題詳解

37 The tornado warning system gave residents 24 minutes’ notice that a twister was bearing down on them.
(A)The residents had been informed for 24 minutes about the attack of a deadly twister.
(B)The residents received notice that a twister was approaching and that it would last for 24 minutes.
(C)The tornado warning system needed 24 minutes to prepare before warning the residents about the cyclone’s arrival.
(D)The tornado warning system issued the warning of an attack to the residents 24 minutes ahead.