13.althoughhepromisedtochnge,I'mstillwonderingwhenheabletoputhisheartintoit.a:wasb:willbec:bed:were

Question

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

Answer 1

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.”