貳、英文寫作 III、第 21 至第 30 題，每題各有一個空格，並各附有四個選項，請依據各題文意與語法，選出最適當的答案，以完成該句。 21. The balance sheet, prepared by the accountants, _________that the company made a profit last month. (A) showing (B) has shown (C) have shown (D) has been shown