Of all the books on the shelf, is of any use for improving our practical skills of survival in the competitive world.
The old houses of this area had to be________immediately so that the government could carry its flowerstylecity programme out.
Children need friends________their own age to play with.
________we will do is to leave a note to tell Mum we will be back late.
Both________and________laughing do harm to your health.
The great artist Xu Beihong is famous for________to horses in his arts.