Being constantly exposed to advertisements is annoying, but it ______ be pleasant sometimes.

—Must I go with you?—No, you ________.

I          use a clock to wake me up because at six o'clock each morning the train comes by my house.

— Shall we take a taxi? — No, we         . It’s not far from here.

---You are sweating. ______ I fetch you some water?  ---It’s so kind of you.