You should complain of if you are not happy with the service you receive. A.of B.if C.with Answer and Feedback Answer:A Feedback:The preposition of is not required here. do you want? view more test Xem thêm Share this post Some other questions you may be interested in. "Is your pen red? " "I go to school .... Monday ..... 7 o'clock " "October is the ..... month of the year " " Please give me a .... of noodles " "My birthday is .... January. " "Jan .... her diary every day." "We don't have .... tomatoes left in the fridge" "Do you like to swim or dance?" "... do you learn English?" "There isn't ...... milk in the bottle."
