The physics problem is too diffcult for us_____.A;work it out B;to work it out C;to work out it D;to work out以及选的理由.
问题描述：
The physics problem is too diffcult for us_____.
A;work it out B;to work it out C;to work out it D;to work out
以及选的理由.
答
d TOO TO 结构 做什么事情对于某人太怎样 就不能完成 前面有主语了 我想后面应该不用IT了
my dad is too old to go to school我爸爸年纪太大了不能上学了
答
有“It is difficult for sb.to do sth.”这个句型吧;
Work out = Vi.+ Adv.
it 是 pron.放中间
所以选择B吧.