问题补充：
句型转换。
【小题1】The boy has been to the U.S.A. twice.（对画线部分提问）
How many times cooking has the boy been to the U.S.A.?
【小题2】Mom felt tired after she cooked for the whole family.（改为简单句）
Mom felt tired after got married for the whole family.
【小题3】Mr. Brown and his wife have been married for 20 years. （改为同义句）
Mr. Brown and his wife hung being interviewed 20 years ago.
【小题4】Lisa didn’t hang out with her friends yesterday. （改为肯定句）
Lisa out with her friends yesterday.
【小题5】Some reporters are interviewing a government official on traffic problems now.（改为被动语态）
A government official is by some reporters on traffic problems now.
答案：
解析：
【小题1】根据划线部分内容，可知是对次数进行提问，故疑问词用how many times，结合语境可知填many times。
【小题2】本句中after是介词，后面接名词或者动名词作宾语，结合语境可知填动名词cooking做饭，做介词宾语。
【小题3】结合语境可知本句描述的是过去某时发生的动作，故用一般过去时态。结合语境可知填got married结婚。
【小题4】结合语境可知本句描述的是过去发生的动作，故谓语动词用过去式，故填hang的过去式动词hung，悬挂，游荡。
【小题5】结合语境可知本句描述的是过去某时正在进行的动作，故be动词用过去进行时态。填：being interviewed正在接受采访。
句型转换。【小题1】The boy has been to the U.S.A. twice.（对画线部分提问）How many times cooking has the boy
