— Where are you going to stay when you get to Shanghai？— I may live _______ in a hotel _______ in a friend’s house.

---Would you please tell me the way to the Pacific Hotel? ---Go______ the post office, and you will find it on the left. 

 ---- Could you tell me how to write an application letter?  ---- With pleasure. Remember that the letter should be written in the formal _______.

What do you often do  _______ Sunday morning?

She is _______of the two.