We can have_______ bluer sky if we create________ less polluted world．

Liu Wei is ______armless young man .But he plays ____piano very well with his feet .–Yes ,He realized his dream in ‘China’s Got Talent ’and recently he played “LiangZhu”at a concert in Vienna.

I can’t agree more. __________. There is no short cut.

John didn’t go to bed ____ deep night.[ ]

Peter, how old is your father this year?— _____. And we just had a party to celebrate his ______ birthday last weekend.