---Goodnews!Self-drivingcarswillcomeintouseinoneortwoye...

问题详情：

--- Good news! Self-driving cars will come into use in one or two years.

      --- Really? We're expecting to see how they                 .

      A. are making         B. are made   C. make         D. will make

【回答】

B

知识点：动词语态

题型：选择题