  ---I’m not sure_____ Mr. Wang goes to see his Wap版

试题详情及答案解析: ---I’m not sure_____ Mr. Wang goes to see his parents ---Twice a week.
A. how long B. how often C. how soo; 答案：B; 试题分析：句意：你应该在上周上午六点到达但是你是七点到达的。这次不要再迟到了。be supposed to do,应该做······。根据句意，可知指是上周日应该做的事情，所以用过去时态，故选B。
考点：考查特殊疑问词的用法。