he is always busy___ (work)是用be busy doing sth还是 be busy with sth
问题描述:
he is always busy___ (work)
是用be busy doing sth还是 be busy with sth
答
这里填working,一般be busy with 接名词。be busy (in) 接动词。
答
working be busy doing sth
答
working
填空里不会让你填上介词的
答
working
be busy doing sth