do sth.by turns啥意思
do sth.by turns啥意思
do sth by mistake 的意思
do sth by oneself什么意思
take turns to do sth造句
take turns to do sth.和take turns doing sth.的区别
take turns doing sth与take turns to do sth 有什么区别?
in turn和take turns to do sth
do sth by mistake造句
take turns to do sth/use sth as a model是什么意思?
take turns to do sth和 doing sth用法有什么区别?
fail in sth..fail to do sth.啥意思?
ask sb to do sth 啥意思