-Have we water? -- Yes. We’d better get some. A. run outB. run out ofC. run intoD.

问题补充：

---- Have we water?

---- Yes. We’d better get some.

A. run out

B. run out of

C. run into

D. run across

答案：

A. run out

(答案→)B. run out of

C. run into

D. run across

解析：本题问句的含义是我们已经用完水了吗？run out of表示用完或耗尽的意思，故本题选B。