what's是what is 或 what has 的常用口语形式，尤当 has为助动词时，中文翻译为是什么、什么是、什麽。例句：Listen! What's that noise? Can you hear it?听！那是什么响声？你能听见吗？Please stop crying and tell me what's wrong.快别哭了，告诉我出了什么事。Are you still working fo...
—What's that noise? —Oh,I forgot to tell you.The new machine ___. A.was testedB.will be tested C.is being testedD.has been tested 试题答案 在线课程 C 考查时态和语态。根据语境判断,此处表示“新机器正在被检测”,因此此处用现在进行时的被动语态。 练习册系列...