问题
选择题
The opportunity Jack had looked forward________at last when he was named chief engineer in the project.
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答案
C
[look forward to作定语从句的谓语，关系词作look forward to的宾语，已省略；其后的动词作主句的谓语，根据后面的时间状语从句可知应用一般过去时。]
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