It's a waste of time这个句型,急,It's a waste of time 后面加to do sth还是doi_英语解答

It's a waste of time这个句型,急,
It's a waste of time 后面加to do sth还是doing sth?
到底哪个正确呢?还是两个都有?

人气：200 ℃　时间：2019-10-11 07:32:35

解答

to do sth