1) The graph clearly shows the fluctuations ______ the prices of commodities from January to March. a) among b) in c) of 2) Due to the innovative design, the input of fresh air _____the window significantly improves the indoor environment. a) through b) in c) across 3) In the storage room, the barrel is placed ____ the second one to maximize space efficiency. a) near b) around c) next to 4) The ambitious project involves the conversion of the concert hall ____ an open-space office to accommodate the growing team. a) from b) into c) out of 5) Unfortunately, the main conference hall is not accessible ___ present, due to ongoing renovations. a) as of b) in c) at

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