问题补充:
The team will movea speed of 15 kilometers per hour, and have a short break every 2 hours. During the break they will tell stories English.
A. with ; by
B. at ; with
C. in ; at
D. at ; in
答案:
A. with ; by
B. at ; with
C. in ; at
(答案→)D. at ; in
解析:at a speed of 为固定词组,in English 为固定词组搭配。