—Must we sweep the floor right now?—No , you ________.You can do it laterA. mustn’tB. can’tC. don’t have to
Ye Shiwen is talented _______ swimming.
His two sisters ______ teachers.
Our city is getting ________.
Mona often eats junk food,________ she knows it is bad for her health.
English is _______ for him to learn.