____(ride) a bike to school only takes him about 10 minutes.
问题描述:
____(ride) a bike to school only takes him about 10 minutes.
答
动词作主语只能用动名词(即动词ing形式),所以是riding
____(ride) a bike to school only takes him about 10 minutes.
动词作主语只能用动名词(即动词ing形式),所以是riding