A-A+

Since the new technology was introduced last m

2022-08-02 00:03:57 问答库阅读 168 次

问题详情

Since the new technology was introduced last month, we ______ in speeding up production.
A．succeed
B．succeeded
C．have succeeded
D．will succeed请帮忙给出正确答案和分析，谢谢！

参考答案

正确答案：C
解析：本题考查谓语动词的时态。句子开头的时间状语由Since引出，这种时间状语应与现在完成时的谓语动词搭配，可见，本题空白处的谓语应为现在完成时的选项C。