in sist on doing是什么意思
in sist on doing是什么意思
spend ...on(in) doing sth ----------------------------------
plan( )doing,in还是on
spend in doing 和 spend on doing的区别
是on doing so 还是in doing so
spend...on(in)doing sth.造句
spend on与spend in doing区别
I am doing well in school.中的doing是什么意思
do well in ; keep on doing ; get on well with
have difficult in doing sth是什么意思?
in doing sth这个句型是什么意思?
join sb in doing sth 是什么意思?