问题
选择题
As he _____ in the river for five hours, the thief looked very pale and hopeless.
A． trapped
B．has been trapped
C． trapping
D．had been trapped
答案
答案：D
动词时态。根据句子意思应用过去完成时。
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As he _____ in the river for five hours, the thief looked very pale and hopeless.
A． trapped
B．has been trapped
C． trapping
D．had been trapped
答案：D
动词时态。根据句子意思应用过去完成时。
