高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
The engines sounded as if they ＿＿＿＿＿ to beat irregularly.
A.was begun
B.will begin
C.would began
D.would begin
The engines sounded as if they ＿＿＿＿＿ to beat irregularly.
A.was begun
B.will begin
C.would began
D.would begin
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