21. The city of Qingdao is known ______ its beautiful seaside.
A. due to B. for C. since D. because
22. Do you know ______the population of your town is?
A. how much B. how many C. what D. how
23. ----Whose advice do you think I should take?
-----___________.
A. That’s it B. You speak C. It’s up to you D. You got it
