—Must we sweep the floor right now?—No , you ________.You can do it laterA. mustn’tB. can’tC. don’t have to
As a student, I can’t afford __________ a new mobile phone.
English is not easy, but I never __________.
Your help made __________ for me to work out this problem.
I don’t think _______ Maths is easy.
Thanks for _________ the new chairperson.