The changes in our chemistry lab will cost quite a lot, they will save us money in the lo

发布时间：2020-08-17 13:14:02

The changes in our chemistry lab will cost quite a lot,      they will save us money in the long run. 
A. or
B. since
C. for
D. but

网友回答

A. or
B. since
C. for
D. but
解析：根据题意,两个分句间为转折关系。in the long run意为“最终地”。  
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