He ( )a letter now A.wants to write B.wants to writing今天就要!说明理由!

问题描述:

He ( )a letter now A.wants to write B.wants to writing
今天就要!说明理由!

选A理由:语法want to do sth.
这里he是第三人称单数。want要加s

A
want to do后面跟动词原形