问题补充：
They go to the movies a month.
A. three times or four times
B. three or four times
C. three and four times
D. three times and four times
答案：
A. three times or four times
B. three or four times
C. three and four times
D. three times and four times
解析：考查数词。句意 他们一个月去看三四次的电影。Three or four times ,三到四次，故选B项。
