____ they could do was to work hard.为什么不能用that?A.all B.all that C.all which D.that 选A

题目

____ they could do was to work hard.为什么不能用that?A.all B.all that C.all which D.that 选A

答案

这道题,个人觉得A和B都应该是正确的.首先that是可以引导主语从句的,可是在引导主语从句的时候,that没有任何含义,仅作为引导词.比如,That light travels in straight lines is known to all.众所周知,光线沿直线运行....