选择（为什么选它）和翻译：Ten days (). long enough for Mr.Carter to finish his design. He doesn't need any more.A isB has beenC wasD had been

分类: 作业答案 • 2021-12-20 07:21:45

问题描述：

选择（为什么选它）和翻译：
Ten days (). long enough for Mr.Carter to finish his design. He doesn't need any more.
A is
B has been
C was
D had been

答

A is

答

A
表示一段时间,用第三人称单数形式.全句为一般现在时,所以选A.