Question

【题目】Some people waste too much water. They don't believe that it can _______ some day.
A.keep out
B.run out
C.be run out
D.run out of

Answer 1

【答案】B
【解析】短语run out意为“用完，耗尽”；keep out“阻止……进入”；run out of “从……中跑出来；用完……”；选项C是被动形式，其后应加介词of。