A． onceB． neverC． oftenD． usually

【C12】A．sometimesB．neverC．alwaysD．usually

This kind of material was occasionally used in making shoes.A.neverB.rarelyC.oftenD.usual

I rarely play cards.A.naturallyB.seldomC.oftenD.usually

A．neverB．seldomC．oftenD．always

A．onceB．neverC．alreadyD．ever

【C6】A．seldomB．alwaysC．oftenD．never