Question

【題目】The dam __________ be closed before the rainy season sets in, or all our labour will be lost.

A.mightB.mustC.shouldn’tD.can

Answer 1

【答案】B

【解析】

句意：水壩必須在雨季來臨之前關(guān)閉，否則我們的勞動就會白費。

考查情態(tài)動詞。might可以；must必須；shouldn’t不應(yīng)該；can可以；根據(jù)The dam __________ be closed before the rainy season sets in, or all our labour will be lost.水壩 在雨季來臨之前關(guān)閉，否則我們的勞動就會白費，所以此處用must表示必須做什么，故選B。