It is necessary to examine this claim（）we proceed any furtherbefore until when since 2.his work( ),he left his office with joy.A finished B being finished C finishing D was finished应该选哪个？

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It is necessary to examine this claim（）we proceed any further
before until when since
2.his work( ),he left his office with joy.
A finished B being finished C finishing D was finished
应该选哪个？

▼优质解答

答案和解析

before
finished

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It is necessary to examine this claim（ ）we proceed any furtherbefore until when since 2.his work( ),he left his office with joy.A finished B being finished C finishing D was finished应该选哪个？

It is necessary to examine this claim（）we proceed any furtherbefore until when since 2.his work( ),he left his office with joy.A finished B being finished C finishing D was finished应该选哪个？