A．onceB．neverC．alreadyD．ever

A． onceB． neverC． oftenD． usually

【C19】A．all readyB．enoughC．alreadyD．always

A．yetB．stillC．alreadyD．too

【C5】A．neverB．yetC．alreadyD．since

–Dou you ______ feel lonely？–Yes, sometimes.A: evenB: neverC: justD: ever

【C12】A．onceB．beforeC．becauseD．and