1.the salesman scolded the girl caught___and let her off.
A.to have stolen B.to be stealing C.to steal D.stealing

2.because of my poor english,i'm afraid i can't make myself___.
A.understand B.be understood C.understood D.understanding(选A还是C？为什么？)
请选择答案并给予说明

1.the salesman scolded the girl caught_D__and let her off.
A.to have stolen B.to be stealing C.to steal D.stealing

2.because of my poor english,i'm afraid i can't make myself__C_.
A.understand B.be understood C.understood D.understanding
找主语:找出这个动作的逻辑主语。
看关系:看所找的逻辑主语与这个要填的词是主动关系，就用现在分词；若是被动关系就用过去分词。
定时态:若前后两个动作是同时发生或不强调其动作的先后，用分词的一般式；若动作有先后，用分词的完成式。