working on a painting是什么意思?有work on sth/doing sth 的固定搭配吗?
working on a painting是什么意思?有work on sth/doing sth 的固定搭配吗?
work on doing sth造句?
有没有work on doing sth这种用法的
work on doing sth还是work on to do sth?
请问keep sth doing 有这样的固定搭配么?
有spend.on doing sth
work on和be busy doing sth.的区别
有decide doing sth.吗?为什么书上写decide on(upon) sth./doing sth.?
On doing sth
keep on doing sth
go on doing sth.和keep doing sth.的区别
make a living by doing sth.与make a living on doing sth.的区别