Question

【题目】You must the water in the tank clean if you have a goldfish.

A. put B. keep C. take D. drink

Answer 1

【答案】B

【解析】句意：如果你养金鱼，你必须保持水箱里的水干净。A. put放；B. keep保持；C. take带去；D. drink喝。Keep+宾语+形容词做宾语补足语，表示保持……处于……状态。根据题意，故选B。