By the end of last month, I _____ all the CDs of Justin Bieber.

______ more, and you’ll improve your spoken English.

I met Daniel in the street yesterday, I ________ him since he left for Beijing.— Well, does he look like what he used to be?

Now the air in our hometown is ___________ than it was before. Something must be done.

I hate people ___________ talk much but do little.