Question

—______ does it usually take her to get to school by bus?

—Half an hour. But she often ______ .

A. How often; is on a bike

B. How long; rides a bicycle

C. How many; by bike

Answer

B

【解析】

句意：-乘坐公交车去学校通常会花费她多长时间？-半个小时，但是她经常骑自行车。How often多久一次，提问频率；How long多长时间，提问一段时间；How many多少，提问数量，修饰可数名词；is on a bike在自行车上；rides a bike骑自行车；by bike介词短语，骑自行车。根据答语Half an hour可知，这里问的是一段 时间，疑问词应该是How long；第二个空是句中的谓语动词，故应用动词短语，选B。