-He __________ his mother do the housework at the age of eight.
-We should help our parents with the housework. I did it when I __________ six.
A. helped, was   
B. helps, was   
C. helped, am
D  helped, am
A
根據(jù)句意及句中的標(biāo)志詞可知此題考查一般過去時(shí)的用法，故選A。
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