My son can’t go to the cinema with you.He must the lessons first.
问题描述：
My son can’t go to the cinema with you.He must the lessons first.
.
A、in the head
B、on the head
C、in its head
D、on its head
答
D
把...放在首位
典型词组有：be turned on its head
例句：Indeed,this whole question of just reward can be turned on its head.实际上,应该把奖励的问题放在首位.