Linda was _____ the experiment a month ago,but she changed her mind at the last

游客2023-11-03  24

问题 Linda was _____ the experiment a month ago,but she changed her mind at the last minute.

选项 A、to start
B、to have started
C、to be starting
D、to have been starting

答案 B

解析 动词时态题。这里考查过去将来完成时的用法,be to do是表示已经计划好,马上要做的事情,因为动作发生在过去(a month ago),这里用was to have done,表示过去的事情对现在的影响,故选[B]。
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