Tom’s uncle has devoted _________ to charity since he came to China 20 years ago.

Thisismygoodfriend.________nameisLinda.

It was the training that he had as a child________made him such a good pianist, received by teenagers as well as adults．

” ______ do you write to your parents?” “Once a month.” [ ]

I found a boy _________ in the corner of the street on my way to the supermarket.