查询词典 have trouble doing sth.

Be busy in doing sth/ with sth.

忙于做某事

Be busy with sth./ doing sth.

忙于某事/做某事

Be busy with sth./be busy doing sth.

忙于做某事/动词词组 13。

Be good at= do well in be busy doing sth be busy with sth ...

央视曝光"网络黑社会"的动机何在？。。。

Be confident in doing sth./be confident about sth.

都是对做某事有信心的意思！

Be confident of sth./doing sth.

确信、有把握做某事；有信心做某事

Be confident of sth/ be confident of doing sth.

确信；对……满怀信心

Be confident about/of sth/doing sth.

对某事有信心

Be good at sth./doing sth.

擅长于某事/做某事 13。

Be fundamental to sth/ doing sth.

对…是必要的，对…是根本的 617。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。