单项选择题29（）

A．functions
B．arranges
C．organises
D．systematises

单项选择题A. give feedbackB. cancel an orderC. make a complaintD. request some informationE. make an apologyF. ask for permissionG. redress production problemH. make an order

A. give feedback
B. cancel an order
C. make a complaint
D. request some information
E. make an apology
F. ask for permission
G. redress production problem
H. make an order