How often do you phone your family?---?A. sometimeB. sometimesC. some timeD. some time

问题补充：

--- How often do you phone your family?---?

A. sometime

B. sometimes

C. some time

D. some times

答案：

A. sometime

(答案→)B. sometimes

C. some time

D. some times

解析：本题中sometime为过去的某个时间，和将来的某个时间，sometimes为有时候，some time为一段时间，some times表示一些次数，故能回答how often 只能是B