Choose the right variant 1. I dont know these words. I ________________learn them/ a. must b.have to c. dont have to 2.Pupils__________ listen t

Choose the right variant 1. I dont know these words. I ________________learn them/ a. must b.have to c. dont have to 2.Pupils__________ listen to their teacher. a. have to b.havent to c. must 3.I ____________ do my homework because I have already done it. a. mustnt b. dont have to c.must Спасибо.