_____________ on the portrait, mother was deep in thought.

All the cloned animals have so far suffered from some serious disorders, many of        dying soon after birth．

With a report _____ about the accident, the policeman has to find some witnesses for help.

Daisy ______ all the housework, she dropped herself into the sofa, sighing with relief.

With so many different forms of poetry ______, students may eventually want to write poems of their own.