问题
选择题
—When ______ this activity________ every year?
—It is held in spring every year. [ ]
A. is; happened
B. does; take place
C. is; happening
D. is ; taken place
答案
答案：B
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—When ______ this activity________ every year?
—It is held in spring every year. [ ]
A. is; happened
B. does; take place
C. is; happening
D. is ; taken place
答案：B