(2013·江西六所重点高中一模)We ________ take clean drinking water for granted. One day we may run out of it.

----____ I take the book out? ---- I’m afraid not. 

—Would you like some______?—Thank you, but l don’t like it.

---Be quiet! Mr Smith is coming. --- Don’t worry. It__________be him. Mr Smith is much taller.

— Jack, take more clothes when going camping. It ______ be very cold in the mountains.— Thank you, Mum. I will.