You ____(return)the magazine to him in two weeks,are you?

问题描述:

You ____(return)the magazine to him in two weeks,are you?

be supposed to 为固定短语:应该
are supposed to return

从反义疑问句的动词来看.
谓语动词应该是be动词.
则可知应该填的是:
are going to return