The teacher had them -----(make\made) Easter hats for their mothers.

问题描述:

The teacher had them -----(make\made) Easter hats for their mothers.

make
have sb do sth 让某人做....

have sb do sth
所以用make

选择make 译为:老师让他们为他们的母亲制作复活节帽子.
have sb to do sth 让某人做某事 to 可以省略.
have sth done 做了某事 而事情是被做