giúp mk nhá:)) hứa vote 5* cảm ơn nhìu 11. It is considered that life in a city is wonderful and ............... a. funny b. boring c. enjoyable d. helpful 12. No city in America has ..................monuments and museums into one area as Washington, DC.\ a. as much b. such many c. a few d. as many 13. He asked me" ..................?" a. How long you have studied English b. How long had you studied English c. How long have you studied English d. How long you had studied English 14. I am not sure .............I can solve this problem. a. how b. what c. who d. by whom 15. She asked me ................the seat...........or not. a. if -had occupied b. whether- was occupied c. if - has been occupied d. whether- occupied