— ________ times a week do you go to the library? — Twice a week.

—We can’t climb the mountains            the bad weather.—What a pity !

---When shall we leave for Shanghai?---We won’t 　　　 we have visited all the places of interest in Nanjing.

 There goes the bell. Hurry up, _______you’ll be late for class. 

________ no one wants to read the book, they have to read it.