求助英语高手nobody knows what these bombs were supposed to hit dur

第一个
没有人知道,在可怕的Vietnam战争中,这些炸弹是准备用来袭击那些目标的.what引导宾语从句 these bombs were supposed to hit ,during the terrible Vietnam War是这个宾语从句中的状语.句子比较长,但是结构不复杂.
on a bed 在床上
in a bed 很少见到,除非是在介绍床本身结构的时候
at this point 在这一点上
in this point,我还没有见过这个用法,估计不对
held从句子来看,应该是保持的意思.句子意为他的双眼被紧紧地蒙着.这个应该是做状语的.

第一个what 是不是错了？？nobody knows where these bombs were supposed to hit during the terrible Vietnam War.
第2个 in the bed 语法错误
第3个 in this point 语法错误
第4个看不懂

what these bombs were supposed to hit during the terrible Vietnam War是整个句子的宾语，during the terrible Vietnam War是状语，what these bombs were supposed to hit 只是宾从
on a bed 在床上 in a bed 指床的内部结构

in this point 无意义

原句不通
Nobody knows what these bombs were supposed to do during the terrible Vietnam War. / Nobody knows where these bombs were supposed to hit during the terrible Vietnam War.
on a bed 在床上（看书，...