Question

—Did you tell your headmaster that the teachers and students had a number of ________ their lunch?
—Yes. He said he must solve this problem.
A. complains about   
B. complaints of   
C. complaints about
D complaints of 

Answer 1

C

Complain为动词，complaint为名词，本题需要名词形式。Abut表示“关于”，所以本题选择C。