Question

---Who can tell me_______?   ---Every 15 minutes.

A．when the bus will arrive.	B．how often the bus arrives
C．how long has the bus been away	D．when will the bus arrive

Answer 1

B

试题分析：句意：—谁能告诉我多久一次？—每十五分钟。根据答语，Every 15 minutes.可知回答的是频率，询问频率用how often，C和D的语序错误，A的语序正确，但不符合题意，故选B。