Since the new technology was introduced last month, we ______ in speeding up pro

游客2023-09-24 47

问题 Since the new technology was introduced last month, we ______ in speeding up production.

选项 A、succeed
B、succeeded
C、have succeeded
D、will succeed

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。

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