Mary didn't know what the Smiths were arguing _____.A.to the woman about B.with the womanC.to the woman D.with the woman about

Mary didn't know what the Smiths were arguing _____.A.to the woman about B.with the womanC.to the woman D.with the woman about
Mary didn't know what the Smiths were arguing _____.
A.to the woman about B.with the womanC.to the woman D.with the woman about

Mary didn't know what the Smiths were arguing _____.A.to the woman about B.with the womanC.to the woman D.with the woman about
D
argue with sb.
因为前面有what引导定语从句,所以后面要加一个about 表生气的内容.