I think much emphasis___our pronunciation.多项题.1.must be placed 2.ought to be placed on
问题描述：
I think much emphasis___our pronunciation.多项题.1.must be placed 2.ought to be placed on
3.must place on 4.should be placed to
答
2. ought to be placed on
place emphasis on sth. 把重点放在.上.这里是被动语态这是多项题哟。。。。。反正应该接on的。可以是 must be placed onshould be placed on'ought to be placed on没有 on, 没有 be placed 的都是错的 （多项选择，就是多选一吧）