Ifallbusinessgoespaperless,atleastonemilliontonsofpape...

問題詳情：

 If all business goes paperless, at least one million tons of paper will be           a year.

   A. used                   B. saved                       C. copied                      D. offered

【回答】

B

知識點：動詞和動詞短語

題型：選擇題