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22. .________ do you study in the library after school? -  Once a week.

      A. How often                  B. How far             C. How many                        D. How long

23. Many young people enjoy _______ community service.                             

      A. do                               B. to do                  C. doing                                 D. does

24. ________ is your telephone number?

      A. When                          B. Which                C. What                                 D. How

26. _____are you going to invite to your party next week?

      A. What                           B. Who                           C. Whose                   D. Where

27. _______did you spend in Hanoi? – One week.

      A. How many                  B. How much                 C. How long              D. How often

14. _____ is this documentary on? - About half an hour.

        A. How far                     B. How much                 C. How long              D. How often

15.  ________ of music do you like? - I like Pop and Rock.

        A. How many kind                                               B. How kind

        C. What kind                                                         D. What much kind