The Somali robbers' frequent attacks on the sea urged the United Nations to __________ all nations to take immediate action.
— Can you lend me the book Gone with the Wind? — Sorry. I returned it to the library just now. Maybe it is still ____.
You are working too hard. You'd better keep a ________ between work and relaxation.
It is by no means clear the president can do to end the strike.
When deeply absorbed in work, ________ he often was, he would forget all about eating or sleeping.
When you are done with the book, just give it to Lucy or Helen or __________.