Last week local shrimpers held a news conference to take some credit for the resurgence of the rare Kemp's ridley turtle, saying that their compliance with laws requiring that turtle-excluder devices be on shrimp nets protect adult sea turtles.
A. requiring that turtle-excluder devices be on shrimp nets protect
B. requiring turtle-excluder devices on shrimp nets is protecting
C. that require turtle-excluder devices on shrimp nets protect
D. to require turtle-excluder devices on shrimp nets are protecting
E. to require turtle-excluder devices on shrimp nets is protecting
答案是B 想请问is 的主语是谁呢?为什么用单数呢?谢谢~
主语是 their compliance
saying that their compliance with laws requiring turtle-excluder devices on shrimp nets is protecting adult sea turtles.
谢谢nn们~^_^
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