Select the correct indirect form of the given sentence.
The teacher said to the students, "You must submit your assignments next Monday."
1
The teacher told the students that they must submit your assignments the following Monday.
2
The teacher told the students that they had to submit your assignments next Monday.
3
The teacher told the students that they are to submit their assignments on the following Monday.
4
The teacher told the students that they had to submit their assignments the following Monday.