All the tasks ______ ahead of time, they decided to go on holiday for a week.

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问题 All the tasks ______ ahead of time, they decided to go on holiday for a week.

选项 A、been fulfilled
B、having been fulfilled
C、were fulfilled
D、had been fulfilled

答案B

解析 “名词或代词+过去分词”结构是独立分词结构,独立分词结构一般可置于句首,也可置于句末,用来表示原因、时间、条件、方式或伴随情况等,例如:The wire well insulated,we can use it here.既然导线已经很好地绝缘了,我们就可把它用在这里。Everything prepared,they set off.一切准备就绪,他们就出发了。Machines used,people do more work with less energy.由于使用了机器,人们就能用较少的力气,干较多
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