...MUSTN´T / HAVE TO - DON´T HAVE TO - ESL worksheet...
1) the sts choose must or mustn´t. 2) They choose have to or don´t have to. 3) They fill in the blanks with must-mustn´t-have to-don´t have to. 4) They make sentences by using the words given. Hope you like it. Have a nice day :)...