Last Sunday Alice did some cleaning for ____.A.two and a half hours B.two and half hour C.two and half hours D.two hour and a half望好心人能顺便说明解题原因,

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Last Sunday Alice did some cleaning for ____.A.two and a half hours B.two and half hour C.two and half hours D.two hour and a half望好心人能顺便说明解题原因,

Last Sunday Alice did some cleaning for ____.A.two and a half hours B.two and half hour C.two and half hours D.two hour and a half望好心人能顺便说明解题原因,
Last Sunday Alice did some cleaning for ____.
A.two and a half hours B.two and half hour C.two and half hours D.two hour and a half
望好心人能顺便说明解题原因,

Last Sunday Alice did some cleaning for ____.A.two and a half hours B.two and half hour C.two and half hours D.two hour and a half望好心人能顺便说明解题原因,
Last Sunday Alice did some cleaning for ____.
D.two hour and a half应该是two hours and a half
C.two and half hours应该是two and a half hours
B.two and half hour应该是two and a half hours
只有A对

选A。。。。。。。。。。。。。