--- Can you tell me ______ it is from here to the Summer Palace? ---Let me see. It's about 15 minutes' ride. 

- Could you do ____   for me, please? Yes, with pleasure．

Take an umbrella with you, ________ you’ll get wet. 

---Can you come on Monday or Tuesday, Scott?  ---I’m afraid_____ possible. I’ll be on business on those two days.

– _____ do you think of studying abroad, Lingling?– Well, it all depends! I prefer studying at home.