第1个回答 2008-03-23
spent doing
spent+一段时间+doing sth
固定用法~
跟It takes sb +一段时间+to do sth 可互换的哈~本回答被提问者采纳
第2个回答 2012-11-29
I often spend two hours on my homework every night.
添spend on
第3个回答 2008-03-23
I spend______ two hours __doing___ my homework.
第4个回答 2008-03-23
I spent two hours on my homework.
第5个回答 2008-03-23
spend on