【C16】A．alsoB．stillC．againD．yet

A．alreadyB．stillC．yet

A．yetB．stillC．alreadyD．too

A．evenB．stillC．howeverD．very

A．alsoB．tooC．and

【C14】A．soB．stillC．evenD．as

【C5】A．SinceB．After a whileC．AgainD．Before long