It’s hard for people to make their way .A. in the rushing hoursB. at the rushing hoursC. a

问题补充：

It’s hard for people to make their way .

A. in the rushing hours

B. at the rushing hours

C. at the rush hours

D. on the rush hours

答案：

A. in the rushing hours

B. at the rushing hours

(答案→)C. at the rush hours

D. on the rush hours

解析：“在交通繁忙时人们很难通行。”at the rush hours固定短语“交通繁忙时”，答案C。