they usually have spare time .这句话怎么变疑问句?

问题描述:

they usually have spare time .这句话怎么变疑问句?

They usually have spare time.意为“他们通常有空闲的时间.”一般疑问句:Do they usually have spare time?他们通常有空闲的时间吗?(问是否有)特殊疑问句:How often do they have spare time?他们有空闲的时间...