When bird watchers find a nest, they are very careful not to disturb it lest the

游客2025-05-09  2

问题 When bird watchers find a nest, they are very careful not to disturb it lest the mother bird______ frightened and desert it

选项 A、should be
B、will be
C、may be
D、could be

答案 A

解析 lest唯恐,以免。后面的宾语从句用虚拟语气,其形式一般是should接动词原形。用于fear,beafraid之后,等于that。
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