13.although he promised to chnge,I'm still wondering when he __able to put his heart into it.

分类: 作业答案 • 2022-01-15 18:43:19

问题描述：

13.although he promised to chnge,I'm still wondering when he __able to put his heart into it.
a:was b:will be c:be d:were

答

B 解析：由主句的I'm still wondering可知此处我想知道的是“还没有发生的事情”,用will be表示“他什么时候才能全神贯注于这件事.”