When you play basketball, you ______ hold the ball and run with it.A. mustn’t B. needn’t C. couldn’t
--- he like singing? ---Yes, he .
---Daniel says hello to me every time he meets me. ---He is very _______.
---Would you like _______milk?---No, _______.
Susan is my good friend and she always helps me _______ my Maths.
My mother often cooks delicious (美味的)food______ us.