her teacher ___ she must learn grammer应该填什么？

Her teacher said that she must learn grammer
or Her teacher asked her that she must learn grammer.

she must learn grammer是宾语从句，必须要有that 引导。

tell 的句型是tell someboy to do sth.

advised/suggested
advises/suggests 建议

根据时态可以用：
told（过去）
tells （现在，第三人称单数）

我觉得应该填makes，因为后面有个must，语气十分强硬，所以前面也应该用强制性的“让某人做某事”，就是make，但又因为是第三人称单数，所以是makes。

teached
told

横线前是个名词，横线后是个句子。如果填动词，想组成词组：make sb do sth,那么sb应该是宾格形式her，而这里的是she,所以应该想到her teacher引导的是一个宾语从句，我认为可填项有以下几种：1.emphasized on that 2.suggested that 3.advised that 4.told that 5 said that
五个可选项的语气依次下降，根据宾语里的must我认为最好选第一个。另外由于没有前后语境，无法判断时态，我姑且用了一般过去时，请楼主自行判断时态。