\_\_\_\_ vigorously from the enormous ice sheets in North America and Europe, those icebergs displaced enough water to raise the global sea level.
APurging
BPurged正確答案
CA purge
DThe purge
答案與詳解
為什麼答案是 B
Purged 是過去分詞，可引導分詞片語，表示被動或完成狀態，等於 After/When they were purged from the enormous ice sheets，修飾主句主詞 those icebergs，語法與語意皆正確。
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