A．unlessB．beforeC．thusD．until

A.EvenB.MoreoverC.ThusD.Ever

【23】A．YetB．HenceC．ThusD．Besides

A．unlessB．beforeC．thusD．until

A．thoughB．whetherC．thusD．how

【C6】A．soB．asC．thusD．such

【C6】A．yetB．henceC．thusD．then