“I regret so much trouble.”   _ “Well. Let’s forget all about that.” A. caused   B. to cause     C. having caused  D. to have caused

“I regret ________ so much trouble.”   _ “Well. Let’s forget all about that.”
A. caused
B. to cause
C. having caused
D. to have caused

Trả lời
Đáp án: C

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