-----Do you know?---At the end of July?A. how soon is your sister coming back homeB. ho

问题补充：

-----Do you know?

-----At the end of July?

A. how soon is your sister coming back home

B. how often Nancy hears from her pen friend

C. when the London Olympic Games will be held

D. when will the new computer game come out

答案：

A. how soon is your sister coming back home

B. how often Nancy hears from her pen friend

(答案→)C. when the London Olympic Games will be held

D. when will the new computer game come out

解析：考查宾语从句的用法。根据答语，可知提问的中心是时间，用疑问词when做连词；宾语从句用陈述语序。