问题描述:
my job is to do还是doing
例:His new job is to sweep the floor.
还是 His new job is sweeping the floor.
还有是floor还是floors?
例:His new job is to sweep the floor.
还是 His new job is sweeping the floor.
还有是floor还是floors?
问题解答:
我来补答展开全文阅读