When he was still a child,He used _____ many question,some o

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When he was still a child,He used _____ many question,some of which others could not answer.
A.to asking B.to ask C.asking D.as

B,
used to do 表示过去常常做某事,而现在往往不做了
i used to get up early in the morning when i was still a hight school student.
be used to doing 表示习惯于做某事
i am used to eating rice now.
be used to do表示...被用来做某事
Pig Stem Cells to Be Used to Grow Human Organs?

When he was still a child,He used _____ many question,some o John enjoys when he was still a child. When he was a child,he used▁▁(stay)in Nanjing.but now he isn When he was a child he ___. 根据首字母填空 1.When he was still a small child,he could h( ) song When he was still a child ____ four,he could already write.填 Edison liked to ask many s___question when he was a child. tom taught__(he)chinese when he was a child Tom taught ________(he) Chinese when he was a child. he often _________(play) volleyball when he was a child . he often wore shoes when he was a child When he was a child,he became a movie star.对when he was a ch