The old man lives (独自).So he feels lonely.Let's go to visit him.
The boy's uncle is good at (train)dogs.His dogs can do wonderful tricks.
根据句意用所给的单词的适当形式填空.
Yang Jiang published a book of her three﹣member﹣family's life We Three in her (ninety )
To be a good citizen,one should draw a clear line between good and bad (divide )
Many countries in the world have reached an to reduce air pollution (agree )
Without your support,I am to complete this documentary on time (able)