COMMANDS AND EXPRESSIONS LAB ACTIVITIES  Dictionaries:  https://dictionary.cambridge.org/es/ https://www.wordreference.com/es/translation.asp?tranword= https://www.oxfordlearnersdictionaries.com/definition/english/dictionary FOURTH TERM Today is Thursday, October 2nd, 2025 1.  Practice Modal verbs: 1- It’s not important that the letter be sent today.  a. It doesn’t have to be sent today.  b. It mustn’t be sent today.  2- Payment can be made when the merchandise is delivered.  a. You mustn’t pay in advance.  b. You don’t have to pay in advance.  3- Your attendance at the meeting tomorrow is optional.  a. You mustn’t attend.  b. You don’t have to attend.  4- Regular customers may pay for purchases by check.  a. They mustn’t pay cash.  b. They don’t have to pay cash.  5- You must be at work on time.   a. You mustn’t be late.  b. You don’t have to be late.  Must Expresa obligación impuesta ...