Could you please tell us about some good ways to learn English?— My suggestion is that reading often and writing regularly ________. [ ]

It is strange that the small boy _________ work out such a difficult exercise, which is even hard to settle for adults.

What are you doing,Mum?—I am______the carpet in order to get rid of the dust in it.

So touching ______ that I couldn’t hold my tears back when I heard it for the first time.

Mr.Smith, together with his two sons,_____Shanghai forabout five months.