问题
选择题
I stood there patiently until he ________ his work.
A．has finished
B．would finish
C．had finished
D．finishes
答案
答案：C
考查时态，句意：我耐心的站在那儿知道他完成了他的作业。结合语境可知从句动作为过去已经完成的动作，故用过去完成时态。选C。
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I stood there patiently until he ________ his work.
A．has finished
B．would finish
C．had finished
D．finishes
答案：C
考查时态，句意：我耐心的站在那儿知道他完成了他的作业。结合语境可知从句动作为过去已经完成的动作，故用过去完成时态。选C。